The Collaborative International Dictionary of English v.0.48:
Longlegs \Long"legs`\, n. (Zool.) A daddy longlegs. [1913 Webster]WordNet (r) 3.0 (2006):
longlegs n 1: long-legged three-toed black-and-white wading bird of inland ponds and marshes or brackish lagoons [syn: stilt, stiltbird, longlegs, long-legs, stilt plover, Himantopus stilt]