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bittern [bittern 词源字典]: bittern: [14] The Latin word for ‘bittern’ (a marsh bird) was būtiō, but by the time it reached Old French it had become butor. The discrepancy has been accounted for by proposing a Vulgar Latin intermediate *būtitaurus, literally ‘bittern-bull’ (Latin taurus is ‘bull’), coined on the basis of the bittern’s loud booming call, supposedly reminiscent of a bull’s. The original English forms, as borrowed from Old French, were botor and bitoure; the final -n first appeared in the 16th century, perhaps on the analogy of heron.
[bittern etymology, bittern origin, 英语词源]
bomb: bomb: [17] Bomb is ultimately of onomatopoeic origin, and can probably be traced back to Greek bómbos, a word for a booming or buzzing sound. This passed into Latin as bombus, the probable source of Italian bomba, which acquired more explosive connotations. English got the word via French bombe. The derivative bombard preceded bomb into English, in the 15th century.
=> bound
bound: bound: English has no fewer than four separate words bound. The only one which goes back to Old English is the adjective, meaning ‘obliged’ or ‘destined’, which comes from the past participle of bind (in Old English this was bunden, which survives partially in ‘bounden duty’). Next oldest is the adjective meaning ‘going or intending to go’ [13]. Originally meaning ‘ready’, this was borrowed from Old Norse búinn, the past participle of búa ‘prepare’, which derived from the same ultimate source (the Germanic base *bū- ‘dwell, cultivate’) as be, boor, booth, bower, build, burly, bye-law, and byre.

The final -d of bound, which appeared in the 16th century, is probably due to association with bound ‘obliged’. Virtually contemporary is the noun bound ‘border, limit’ [13]. It originally meant ‘landmark’, and came via Anglo-Norman bounde from early Old French bodne (source also of Old French borne, from which English got bourn, as in Hamlet’s ‘undiscovered country from whose bourn no traveller returns’).

Its ultimate source was medieval Latin bodina, perhaps from a prehistoric Gaulish *bodina. Boundary [17] seems to have been formed from the dialectal bounder, an agent noun derived from the verb bound ‘form the edge or limit of’. Finally, bound ‘leap’ [16] comes from Old French bondir. It originally meant ‘rebound’ in English (rebound [14] began as an Old French derivative of bondir), but this physical sense was a metaphorical transference from an earlier sense related to sound.

Old French bondir ‘resound’ came from Vulgar Latin *bombitīre ‘hum’, which itself was a derivative of Latin bombus ‘booming sound’ (source of English bomb).
=> band, bend, bind, bond, bundle; be, boor, booth, bower, build, burly, byre, neighbour; boundary, bourn; bomb, rebound
bittern (n.): heron-like bird, 13c., botor, from Old French butor "bittern," perhaps from Gallo-Roman *butitaurus, from Latin butionem "bittern" + taurus "bull" (see steer (n.)); according to Pliny, so called because of its booming voice, but this seems fanciful. Modern form from 1510s.
bomb (n.): 1580s, from French bombe, from Italian bomba, probably from Latin bombus "a deep, hollow noise; a buzzing or booming sound," from Greek bombos "deep and hollow sound," echoic. Originally of mortar shells, etc.; modern sense of "explosive device placed by hand or dropped from airplane" is 1909. Meaning "old car" is from 1953. Meaning "success" is from 1954 (late 1990s slang the bomb "the best" is probably a fresh formation); opposite sense of "a failure" is from 1963. The bomb "atomic bomb" is from 1945.
boom (v.): mid-15c., earliest use was for bees and wasps, probably echoic of humming. The meaning "make a loud noise" is 15c. Compare bomb. Meaning "to burst into prosperity" (of places, businesses, etc.) is 1871, American English. Related: Boomed; booming. Boom box first attested 1978.
boom (n.2): in the business sense, 1873, sometimes said to be from boom (n.1), from the nautical meaning "a long spar run out to extend the foot of a sail" -- a ship "booming" being one in full sail. But it could just as well be from boom (v.) on the notion of "suddenness."
bump (v.): 1560s, "to bulge out;" 1610s, "to strike heavily," perhaps from Scandinavian, probably echoic, original sense was "hitting" then of "swelling from being hit." Also has a long association with obsolete bum "to make a booming noise," which perhaps influenced surviving senses such as bumper crop, for something full to the brim (see bumper). To bump into "meet" is from 1880s; to bump off "kill" is 1908 in underworld slang. Related: Bumped; bumping. Bumpsy (adj.) was old slang for "drunk" (1610s).
bumper (n.): 1670s, "glass filled to the brim;" perhaps from notion of bumping as "large," or from a related sense of "booming" (see bump (v.)). Meaning "anything unusually large" is from 1759, slang. Agent-noun meaning "buffer of a car" is from 1839, American English, originally in reference to railway cars; 1901 of automobiles (in phrase bumper-to-bumper, in reference to a hypothetical situation; of actual traffic jams by 1908).