The Collaborative International Dictionary of English v.0.48:

Pressiroster \Pres`si*ros"ter\, n. [L. presssus pressed (p. p.
   of premere) + rostrum beak: cf. F. pressirostre. See 4th
   Press.] (Zool.)
   One of a tribe of wading birds (Pressirostres) including
   those which have a compressed beak, as the plovers.
   [1913 Webster]