1. (verb)jam, jampack, ram, chock up, cram, wad crowd or pack to capacity "the theater was jampacked"
2. (verb)cram put something somewhere so that the space is completely filled "cram books into the suitcase"
3. (verb)cram, grind away, drum, bone up, swot, get up, mug up, swot up, bone study intensively, as before an exam "I had to bone up on my Latin verbs before the final exam"
4. (verb)cram prepare (students) hastily for an impending exam