Wedge-tailedWedge"-tailed"\, a. (Zo["o]l.) Having a tail which has the middle pair of feathers longest, the rest successively and decidedly shorter, and all more or less attenuate; -- said of certain birds. See Illust. of Wood hoopoe, under Wood. Wedge-tailed eagle, an Australian eagle (Aquila audax) which feeds on various small species of kangaroos, and on lambs; -- called also mountain eagle, bold eagle, and eagle hawk. Wedge-tailed gull, an arctic gull (Rhodostethia rosea) in which the plumage is tinged with rose; -- called also Ross's gull.