loon

noun9

1. •
   (US, Canada) Any of various birds, of the order Gaviiformes, of North America and Europe that dive for fish and have a short tail, webbed feet and a yodeling cry.

   • The Loone is an ill shap'd thing like a Cormorant; but that he can neyther goe nor flye; he maketh a noise sometimes like a Sovvgelders horne. — 1634
2. •
   (slang) A crazy or deranged person; a lunatic.

   • An electric fire came next, followed by an umbrella and then a colander. "This bowl will carry no water," he muttered. "Some loon hath pierced it with holes." — 1971
3. •
   (Scotland) A simpleton.
4. •
   (Scotland) A boy, a lad.
5. •
   A round area of pavement that protrudes from one side of a road to accommodate turning vehicles with a wide turning circle.
6. •
   (Scotland) A harlot; mistress.
7. •
   (Ireland, historical) An English soldier of an expeditionary army in Ireland.
8. •
   Clipping of balloon.
9. •
   (no longer used) An idler, a lout.

   • The diuell damne thee blacke, thou cream-fac'd Loone: Where got'st thou that Goose-looke. — 1606