any of several large, chiefly terrestrial and ground-running birds of the family Otididae, of the Old World and Australia, related to the cranes.
Origin: 1425–75; late ME, appar. b. MF bistarde (OIt bistarda) and MF oustarde, both < L avis tarda (Pliny) lit., slow bird, though tarda may be a non-L word, taken erroneously as fem. of tardus
bus·tard (bŭs'tərd) n. Any of various large, long-legged Old World game birds of the family Otididae that frequent dry, open, grassy plains.
[Middle English, from blend of Old French bistarde and Old French oustarde, both from Latin avis tarda : avis, bird; see awi- in Indo-European roots + tarda, feminine of tardus, slow.]