gorge (n.)youdaoicibaDictYouDict[gorge 词源字典]
mid-14c., "throat," from Old French gorge "throat; a narrow passage" (12c.), from Late Latin gurges "gullet, throat, jaws," also "gulf, whirlpool," which probably is related to Latin gurgulio "gullet, windpipe," from a reduplicated form of PIE *gwere- (4) "to swallow" (see voracity). Transferred sense of "deep, narrow valley" was in Old French. From 1520s as "what has been swallowed," hence in figurative phrases indicating nauseating disgust.[gorge etymology, gorge origin, 英语词源]
grandstand (n.)youdaoicibaDictYouDict
"main seating for spectators at an outdoor event," 1761 (two words), from grand (adj.) + stand (n.). The verb meaning "to show off" is student slang from 1895, from grandstand player, attested in baseball slang from 1888.
It's little things of this sort which makes the 'grand stand player.' They make impossible catches, and when they get the ball they roll all over the field. [M.J. Kelly, "Play Ball," 1888]
Compare British gallery hit (1882) "showy play by a batsman in cricket, 'intended to gain applause from uncritical spectators'" [OED]. Related: grandstanding.
install (v.)youdaoicibaDictYouDict
early 15c., "place in (ecclesiastical) office by seating in an official stall," from Medieval Latin installare, from Latin in- "in" (see in- (2)) + Medieval Latin stallum "stall," from a Germanic source (compare Old High German stal "standing place;" see stall (n.1)). Related: Installed; installing.
left (adj.)youdaoicibaDictYouDict
c. 1200, from Kentish and northern English form of Old English lyft- "weak, foolish" (compare lyft-adl "lameness, paralysis," East Frisian luf, Dutch dialectal loof "weak, worthless"). It emerged 13c. as "opposite of right" (the left being usually the weaker hand), a derived sense also found in cognate Middle Dutch and Low German luchter, luft. But German link, Dutch linker "left" are from Old High German slinc and Middle Dutch slink "left," related to Old English slincan "crawl," Swedish linka "limp," slinka "dangle."

Replaced Old English winestra, literally "friendlier," a euphemism used superstitiously to avoid invoking the unlucky forces connected with the left side (see sinister). The Kentish word itself may have been originally a taboo replacement, if instead it represents PIE root *laiwo-, meaning "considered conspicuous" (represented in Greek laios, Latin laevus, and Russian levyi). Greek also uses a euphemism for "left," aristeros "the better one" (compare also Avestan vairyastara- "to the left," from vairya- "desirable"). But Lithuanian kairys "left" and Lettish kreilis "left hand" derive from a root that yields words for "twisted, crooked."

As an adverb from early 14c. As a noun from c. 1200. Political sense arose from members of a legislative body assigned to the left side of a chamber, first attested in English 1837 (by Carlyle, in reference to the French Revolution), probably a loan-translation of French la gauche (1791), said to have originated during the seating of the French National Assembly in 1789 in which the nobility took the seats on the President's right and left the Third Estate to sit on the left. Became general in U.S. and British political speech c. 1900.

Used since at least c. 1600 in various senses of "irregular, illicit;" earlier proverbial sense was "opposite of what is expressed" (mid-15c.). Phrase out in left field "out of touch with pertinent realities" is attested from 1944, from the baseball fielding position that tends to be far removed from the play. To have two left feet "be clumsy" is attested by 1902. The Left Bank of Paris (left bank of the River Seine, as you face downstream) has been associated with intellectual and artistic culture since at least 1893.
nauseate (v.)youdaoicibaDictYouDict
1630s, "to feel sick, to become affected with nausea," from nauseat- past participle stem of Latin nauseare "to feel seasick, to vomit," also "to cause disgust," from nausea (see nausea). Related: Nauseated; nauseating; nauseatingly. In its early life it also had transitive senses of "to reject (food, etc.) with a feeling of nausea" (1640s) and "to create a loathing in, to cause nausea" (1650s). Careful writers use nauseated for "sick at the stomach" and reserve nauseous (q.v.) for "sickening to contemplate."
reseat (v.)youdaoicibaDictYouDict
"to seat again," 1630s, from re- + seat (v.). Related: Reseated; reseating.
salt (n.)youdaoicibaDictYouDict
Old English sealt "salt" (n.; also as an adjective, "salty, briny"), from Proto-Germanic *saltom (cognates: Old Saxon, Old Norse, Old Frisian, Gothic salt, Dutch zout, German Salz), from PIE *sal- (1) "salt" (cognates: Greek hals "salt, sea," Latin sal, Old Church Slavonic soli, Old Irish salann, Welsh halen "salt").

Modern chemistry sense is from 1790. Meaning "experienced sailor" is first attested 1840, in reference to the salinity of the sea. Salt was long regarded as having power to repel spiritual and magical evil. Many metaphoric uses reflect that this was once a rare and important resource, such as worth one's salt (1830), salt of the earth (Old English, after Matt. v:13). Belief that spilling salt brings bad luck is attested from 16c. To be above (or below) the salt (1590s) refers to customs of seating at a long table according to rank or honor, and placing a large salt-cellar in the middle of the dining table.

Salt-lick first recorded 1751; salt-marsh is Old English sealtne mersc; salt-shaker is from 1882. Salt-and-pepper "of dark and light color" first recorded 1915. To take something with a grain of salt is from 1640s, from Modern Latin cum grano salis.
seat (v.)youdaoicibaDictYouDict
1570s, "to be in a certain position" (implied in seated), from seat (n.2). Of diseases, in the body, from 1610s (hence deep-seated). Meaning "to cause to sit in a seat" is from 1610s, from seat (n.1). Related: Seated; seating.
sedan (n.)youdaoicibaDictYouDict
1630s, "covered chair on poles," possibly from a southern Italian dialect derivative of Italian sede "chair" (compare Italian seggietta, 1590s; the thing itself was said to have been introduced from Naples), from Latin sedes, related to sedere "sit" (see sedentary). Since Johnson's conjecture, often derived from the town of Sedan in France, where it was said to have been made or first used, but historical evidence for this is lacking.

Introduced in England by Sir Sanders Duncombe in 1634 and first called a covered chair. "In Paris the sedan-chair man was usually an Auvergnat, in London an Irishman" ["Encyclopaedia Britannica," 1929]. Meaning "closed automobile seating four or more" first recorded 1912, American English.
unseat (v.)youdaoicibaDictYouDict
1590s, "to throw down from a seat" (especially on horseback), from un- (2) "reverse, opposite of" + seat (v.). Meaning "to deprive of rank or office" is attested from 1610s; especially of elected office in a representative body from 1834. Related: Unseated; unseating.