The Collaborative International Dictionary of English v.0.48:

Whaap \Whaap\, n. [So called from one of its notes.] (Zool.)
   (a) The European curlew; -- called also awp, whaup,
       great whaup, and stock whaup.
   (b) The whimbrel; -- called also May whaup, little whaup,
       and tang whaup. [Prov. Eng. & Scot.]
       [1913 Webster]