noun

• (obsolete) That which resembles another thing; a likeness; a portrait; a counterpart.
  "Thou drawest a counterfeit / Best in all Athens."
• (obsolete) An impostor; a cheat.
  "I fear thou art another counterfeit; / And yet, in faith, thou bear'st thee like a king."

verb

• (transitive) To falsely produce what appears to be official or valid; to produce a forged copy of.
  "to counterfeit the signature of another, coins, notes, etc."
• (transitive, obsolete) To produce a faithful copy of.
  "The title page of White's original album includes a descriptive title page that identifies the contents as “the pictures of sondry things collected and counterfeited according to the truth,""
• (transitive, obsolete) To feign; to mimic.
  "to counterfeit the voice of another person"
• (transitive, poker, usually "be counterfeited") Of a turn or river card, to invalidate a player's hand by making a better hand on the board.