ream

Concise Oxford English Dictionary © 2008 Oxford University Press:
ream1

▶noun

• 1 500 (formerly 480) sheets of paper.

• 2 (usu. reams) a large quantity of something, especially paper.

– origin ME: from OFr. raime, based on Arab. rizma ‘bundle’.

Concise Oxford English Dictionary © 2008 Oxford University Press:
ream2

▶verb

• 1 widen (a bore or hole) with a special tool.

  ■ N. Amer. clear out or remove (material) from something.

• 2 N. Amer. informal rebuke angrily.

• 3 N. Amer. vulgar slang have anal intercourse with.

– origin C19: of unknown origin.