Source : Webster's Revised Unabridged Dictionary (1913)

Hatter \Hat"ter\, v. t. [Prov. E., to entangle; cf. LG.
   verhaddern, verheddern, verhiddern.]
   To tire or worry; -- out. [Obs.] --Dryden.

Hatter \Hat"ter\, n.
   One who makes or sells hats.

Source : WordNet®

hatter
     n : someone who makes and sells hats [syn: {hatmaker}, {milliner},
          {modiste}]