The Collaborative International Dictionary of English v.0.48:

Pill-willet \Pill"-wil`let\, n. [So named from its note.]
   (Zool.)
   The willet.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Willet \Wil"let\, n. (Zool.)
   A large North American snipe (Symphemia semipalmata); --
   called also pill-willet, will-willet, semipalmated
   tattler, or snipe, duck snipe, and stone curlew.
   [1913 Webster]

   Carolina willet, the Hudsonian godwit.
      [1913 Webster]