pumpkinyoudaoicibaDictYouDict[pumpkin 词源字典]
pumpkin: [17] Much as they look as though they had been blown up with a pump, pumpkins have no etymological connection with pumps. Greek pépōn denoted a variety of melon that was not eaten until it was fully ripe (the word was a noun use of the adjective pépōn ‘ripe’). Latin took it over as pepō, and passed it on to Old French as *pepon. Through a series of vicissitudes this evolved via popon to early modern French pompon. This was borrowed into English in the 16th century, and soon altered to pompion; and in the 17th century the native diminutive suffix -kin was grafted on to it to produce pumpkin.
[pumpkin etymology, pumpkin origin, 英语词源]
football (n.)youdaoicibaDictYouDict
open-air game involving kicking a ball, c. 1400; in reference to the inflated ball used in the game, mid-14c. ("Þe heued fro þe body went, Als it were a foteballe," Octavian I manuscript, c. 1350), from foot (n.) + ball (n.1). Forbidden in a Scottish statute of 1424. One of Shakespeare's insults is "you base foot-ball player" [Lear I.iv]. Ball-kicking games date back to the Roman legions, at least, but the sport seems first to have risen to a national obsession in England, c. 1630. Figurative sense of "something idly kicked around, something subject to hard use and many vicissitudes" is by 1530s.

Rules of the game first regularized at Cambridge, 1848; soccer (q.v.) split off in 1863. The U.S. style (known to some in England as "stop-start rugby with padding") evolved gradually 19c.; the first true collegiate game is considered to have been played Nov. 6, 1869, between Princeton and Rutgers, at Rutgers, but the rules there were more like soccer. A rematch at Princeton Nov. 13, with the home team's rules, was true U.S. football. Both were described as foot-ball at Princeton.
Then twenty-five of the best players in college were sent up to Brunswick to combat with the Rutgers boys. Their peculiar way of playing this game proved to Princeton an insurmountable difficulty; .... Two weeks later Rutgers sent down the same twenty-five, and on the Princeton grounds, November 13th, Nassau played her game; the result was joyous, and entirely obliterated the stigma of the previous defeat. ["Typical Forms of '71" by the Princeton University Class of '72, 1869]
vicissitude (n.)youdaoicibaDictYouDict
"a passing from one state to another," whether regular or not, 1560s, from Middle French vicissitude (14c.), from Latin vicissitudinem (nominative vicissitudo) "change, interchange, alternation," from vicissim (adv.) "changeably, on the other hand, by turns, in turn," from vicis "a turn, change" (see vicarious). Related: Vicissitudes.