Argyle (n.)youdaoicibaDictYouDict[Argyle 词源字典]
"diamond-shaped pattern of two or more colors in fabric," said to be so called from similarity to tartans worn by Campbell clan of Argyll, Scotland. The place name is literally "land of the Gaels," from Old Irish airer "country." Argyle socks is from 1935.[Argyle etymology, Argyle origin, 英语词源]
bobby soxyoudaoicibaDictYouDict
1943, from diminutive of bob (n.2) + sox. So called because they are "shortened" compared to knee-socks. Derivative bobby-soxer first attested 1944.
Months ago colored bobby sox folded at the top were decreed, not by anyone or any group but, as usual, by a sudden mysterious and universal acceptance of the new idea. Now no teen-ager dares wear anything but pure white socks without a fold. ["Life" magazine, Dec. 11, 1944]
lad (n.)youdaoicibaDictYouDict
c. 1300, ladde "foot soldier," also "young male servant" (attested as a surname from late 12c.), possibly from a Scandinavian language (compare Norwegian -ladd, in compounds for "young man"), but of obscure origin in any case. OED hazards a guess on Middle English ladde, plural of the past participle of lead (v.), thus "one who is led" (by a lord). Liberman derives it from Old Norse ladd "hose; woolen stocking." "The development must have been from 'stocking,' 'foolish youth' to 'youngster of inferior status' and (with an ameliorated meaning) to 'young fellow.'" He adds, "Words for socks, stockings, and shoes seem to have been current as terms of abuse for and nicknames of fools." Meaning "boy, youth, young man" is from mid-15c. Scottish form laddie, a term of endearment, attested from 1540s.
sock (n.1)youdaoicibaDictYouDict
"knitted or woven covering for the foot, short stocking," early 14c., from Old English socc "slipper, light shoe," from Latin soccus "slipper, light low-heeled shoe," probably a variant of Greek sykchos, word for a kind of shoe, perhaps from Phrygian or another Asiatic language. The Latin word was borrowed generally in West Germanic (Middle Dutch socke, Dutch sok, Old High German soc, German Socke). To knock the socks off (someone) "beat thoroughly" is recorded from 1845, American English colloquial. Teen slang sock hop is c. 1950, from notion of dancing without shoes.