A rotating cutting tool, used for cutting holes in rigid materials, that consists of an essentially conical point, relieved and fluted to form cutting lips, and spiral flutes which direct the chips...

Sharpness or acuteness, as of a needle, wit, etc. / The ability to think, see, or hear clearly.

(organic chemistry) Any salt or ester of lyxonic acid

simple past tense and past participle of gold-brick