What is the meaning of cuff?

noun

• The lap consisting of a turned-back hem encircling the end of the sleeve or leg.
  • synonyms: turnup
• Shackle that consists of a metal loop that can be locked around the wrist; usually used in pairs.
  • synonyms: handcuff, handlock, manacle

verb

• Hit with the hand.
  • synonyms: whomp
• Confine or restrain with or as if with manacles or handcuffs.
  • usage: "The police handcuffed the suspect at the scene of the crime"
  • synonyms: manacle, handcuff