Cram
Old English crammian, of Germanic origin; related to Dutch krammen ‘to cramp or clamp’.
wiktionary
From Middle English crammen, from Old English crammian(“to cram; stuff”), from Proto-West Germanic *krammōn, from Proto-Germanic *krammōną, a secondary verb derived from *krimmaną(“to stuff”), from Proto-Indo-European *ger-(“to assemble; collect; gather”). Compare Old English crimman(“to cram; stuff; insert; press; bruise”), Icelandic kremja(“to squeeze; crush; bruise”).
etymonline
cram (v.)
Old English crammian "press something into something else," from Proto-Germanic *kramm- (source also of Old High German krimman "to press, pinch," Old Norse kremja "to squeeze, pinch"), from extended form of PIE root *ger- "to gather."
From early 14c. as "fill with more than can be conveniently contained." Meaning "study intensely for an exam in a short time" (with a view to passing the test, not real learning) is attested by 1803, transitive as well as reflexive, originally British student slang. Related: Crammed; cramming; crammer.
