|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
|a chattering or flighty, light-headed person.|
|wishbone (wĭsh'bōn') Pronunciation Key
The forked bone in front of the breastbone in most birds, consisting of the two collarbones partly fused together. It serves as a spring, capturing some of the energy during the downward stroke of the wings for release on the upward stroke.