any of several aquatic birds of the rail family with long thin feet and a platelike frontal area on the head: such as
gallinules
noun(gal-li-nule)
moorhen
gallinules
noun(gal-li-nule)
one (Porphyrula martinica) found from the southern U.S. to Argentina that is purplish blue with olive-green upperparts, a red and yellow bill, and a light blue frontal area