Source : Webster's Revised Unabridged Dictionary (1913)

Bluecap \Blue"cap`\, n.
   1. (Zo["o]l.)
      (a) The bluepoll.
      (b) The blue bonnet or blue titmouse.

   2. A Scot; a Scotchman; -- so named from wearing a blue
      bonnet. [Poetic] --Shak.