cuff

Concise Oxford English Dictionary © 2008 Oxford University Press:
cuff1

▶noun

• 1 the end part of a sleeve, where the material of the sleeve is turned back or a separate band is sewn on.

  ■ N. Amer. a trouser turn-up.

• 2 (cuffs) informal handcuffs.

• 3 an inflatable bag wrapped round the arm to enable blood pressure to be measured.

▶verb informal secure with handcuffs.

– phrases
off the cuff informal without preparation. [as if from impromptu notes made on one's shirt cuffs.]

– derivatives
cuffed adjective.

– origin ME (denoting a glove or mitten): of unknown origin.

Concise Oxford English Dictionary © 2008 Oxford University Press:
cuff2

▶verb strike with an open hand, especially on the head. ▶noun a blow given with an open hand.

– origin C16: of unknown origin.