To press, force, or drive, particularly in filling, or in thrusting one thing into another; to stuff; to fill to superfluity.
to cram fruit into a basket; to cram a room with people
To fill with food to satiety; to stuff.
The boy crammed himself with cake
To put hastily through an extensive course of memorizing or study, as in preparation for an examination.
A pupil is crammed by his tutor.
To study hard; to swot.
To eat greedily, and to satiety; to stuff oneself.
(British slang) To lie; to intentionally not tell the truth.
(British slang) To make (a person) believe false or exaggerated tales.