in. to study hard at the last minute for a test. : If you would study all the time, you wouldn't need to cram.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
Cite This Source
Word Origin & History
cram
O.E. crammian "press something into something else," from P.Gmc. base *kram-/*krem-. Meaning "study intensely for an exam" is British student slang first recorded 1803.
[kram] 