noun

• (dated outside UK and Australia) A man, a fellow.
  "Who’s that chap over there?"
• (UK, dialectal) A customer, a buyer.
  "If you have Blacks of any kind, brought in of late; Mantoes--Velvet Scarfs--Petticoats--Let it be what it will--I am your Chap--for all my Ladies are very fond of Mourning."
• (Southern US) A child.

verb

• (intransitive) Of the skin, to split or flake due to cold weather or dryness.
• (transitive) To cause to open in slits or chinks; to split; to cause the skin of to crack or become rough.
  "Then would unbalanced heat licentious reign, / Crack the dry hill, and chap the russet plain."
• (Scotland, Northern England) To strike, knock.
  "And then it seems that through the open door there came the chapping of a clock."

noun

• (obsolete) A division; a breach, as in a party.
  "Many clefts and chaps in our council board."
• (Scotland) A blow; a rap.

noun

• (archaic, often in the plural) The jaw.
  "This wide-chapp'd rascal—would thou might'st lie drowning / The washing of ten tides!"