Meaning

• 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.