Wedge-tailed \Wedge"-tailed"\, a. (Zool.) 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}. [1913 Webster] {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}. [1913 Webster]
Bold eagle \Bold eagle\, (Zool.) an Australian eagle ({Aquila audax}), which destroys lambs and even the kangaroo. {To make bold}, to take liberties or the liberty; to venture. [1913 Webster] Syn: Courageous; daring; brave; intrepid; fearless; dauntless; valiant; manful; audacious; stouthearted; high-spirited; adventurous; confident; strenuous; forward; impudent. [1913 Webster]