DOVETAIL n.
(shaped like a bird's tail spread), and a mortise, or socket, into which it fits tightly, making an interlocking joint between two pieces which resists pulling a part in all directions except one. Dovetail molding (Arch.), a molding of any convex section arranged in a sort of zigzag, like a series of dovetails. -- Dov…
DRILL n. 2 definitions
An instrument with an edged or pointed end used for making holes in hard substances; strictly, a tool that cuts with its end, by revolving, as in drilling metals, or by a succession of blows, as in drilling stone; also, a drill press.