beat (v.)youdaoicibaDictYouDict[beat 词源字典]
Old English beatan "inflict blows on, thrash" (class VII strong verb; past tense beot, past participle beaten), from Proto-Germanic *bautan (cognates: Old Norse bauta, Old High German bozan "to beat"), from PIE root *bhau- "to strike" (see batter (v.)). Of the heart, c. 1200, from notion of it striking against the breast. Meaning "to overcome in a contest" is from 1610s (the source of the sense of "legally avoid, escape" in beat the charges, etc., attested from c. 1920 in underworld slang).

Past tense beat is from c. 1500, probably not from Old English but a shortening of Middle English beted. Dead-beat (originally "tired-out") preserves the old past participle. Meaning "strike cover to rouse or drive game" (c. 1400) is source of beat around the bush (1570s), the metaphoric sense of which has shifted from "make preliminary motions" to "avoid, evade." Command beat it "go away" first recorded 1906 (though "action of feet upon the ground" was a sense of Old English betan). To beat off "masturbate" is recorded by 1960s. For beat generation see beatnik.[beat etymology, beat origin, 英语词源]
beatnik (n.)youdaoicibaDictYouDict
coined 1958 by San Francisco newspaper columnist Herb Caen during the heyday of -nik suffixes in the wake of Sputnik. From Beat generation (1952), associated with beat (n.) in its meaning "rhythm (especially in jazz)" as well as beat (past participle adjective) "worn out, exhausted," but originator Jack Kerouac (1922-1969) in 1958 connected it with beatitude.
The origins of the word beat are obscure, but the meaning is only too clear to most Americans. More than the feeling of weariness, it implies the feeling of having been used, of being raw. It involves a sort of nakedness of the mind. ["New York Times Magazine," Oct. 2, 1952]


"Beat" is old carny slang. According to Beat Movement legend (and it is a movement with a deep inventory of legend), Ginsberg and Kerouac picked it up from a character named Herbert Huncke, a gay street hustler and drug addict from Chicago who began hanging around Times Square in 1939 (and who introduced William Burroughs to heroin, an important cultural moment). The term has nothing to do with music; it names the condition of being beaten down, poor, exhausted, at the bottom of the world. [Louis Menand, "New Yorker," Oct. 1, 2007]