英语词源字典 - 在线词源网站

chock-full (adj.)[chock-full 词源字典]: c. 1400, chokkeful "crammed full," possibly from choke "cheek" (see cheek (n.)). Or it may be from Old French choquier "collide, crash, hit" (13c., Modern French choquer), which is probably from Germanic (compare Middle Dutch schokken; see shock (n.1)).[chock-full etymology, chock-full origin, 英语词源]
cram (v.): Old English crammian "press something into something else," from Proto-Germanic *kram-/*krem- (cognates: Old High German krimman "to press, pinch," Old Norse kremja "to squeeze, pinch"), from PIE root *ger- "to gather" (see gregarious). Meaning "study intensely for an exam" originally was British student slang first recorded 1803. Related: Crammed; cramming.
scram (v.): 1928, U.S. slang, either a shortened form of scramble (v.) or from German schramm, imperative singular of schrammen "depart." Related: Scrammed; scramming.