D defs.my
Entry 1 sense Webster, 1913

Puzzler

/pŭz'-lẽr/ · Puz·zler · IPA /pˈʌzlər/
01 n. One who, or that which, puzzles or perplexes.
  1. 1.
    One who, or that which, puzzles or perplexes.
    “Hebrew, the general puzzler of old heads.” — Brome.