1. [n]  an informal term for a person's role; "he took off his politician's hat and talked frankly"
2. [n]  headdress that protects the head from bad weather; has shaped crown and usually a brim
3. [v]  put on or wear a hat; "He was unsuitably hatted"

1. \Hat\, a.
   Hot. [Obs.] --Chaucer.
   

2. \Hat\,
   sing. pres. of {Hote} to be called. Cf. {Hatte}. [Obs.]
   ``That one hat abstinence.'' --Piers Plowman.
   

3. \Hat\, n. [AS. h[ae]t, h[ae]tt; akin to Dan. hat, Sw. hatt,
   Icel. hattr a hat, h["o]ttr hood, D. hoed hat, G. hut, OHG.
   huot, and prob. to L. cassis helmet. ???. Cf.{Hood}.]
   A covering for the head; esp., one with a crown and brim,
   made of various materials, and worn by men or women for
   protecting the head from the sun or weather, or for ornament.
   {Hat block}, a block on which hats are formed or dressed.
   {To pass around the hat}, to take up a collection of
      voluntary contributions, which are often received in a
      hat. [Collog.] --Lowell.
   

A common (spoken) name for the circumflex ("^", ASCII 94) character.

See ASCII for other synonyms.

[Jargon File]

Chald. karb'ela, (Dan. 3:21), properly mantle or pallium. The Revised Version renders it "tunic."