'Puzzler' definitions:

Definition of 'puzzler'

(from WordNet)
noun
A particularly baffling problem that is said to have a correct solution; "he loved to solve chessmate puzzles"; "that's a real puzzler" [syn: puzzle, puzzler, mystifier, teaser]

Definition of 'Puzzler'

From: GCIDE
  • Puzzler \Puz"zler\, n. One who, or that which, puzzles or perplexes. [1913 Webster]
  • Hebrew, the general puzzler of old heads. --Brome. [1913 Webster]

Synonyms of 'puzzler'

From: Moby Thesaurus