• (a.) Having a long bill; of or pertaining to the Longirostres.
Lon`gi·ros'tral adjective (Zoology) Having a long bill; of or pertaining to the Longirostres. 
longiroster, longirostral 1. Having a long beak; one of the Longirostres, a family of wading birds distinguished by the length and tenuity [thinness, slenderness] of the bill. 2. A group of birds characterized by having long slender bills, as the sandpipers, curlews, and ibises.