\Dove"tail`\, n. (Carp.)
A flaring tenon, or tongue (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.
{Dovetail saw} (Carp.), a saw used in dovetailing.

\Dove"tail`\, v. t. [imp. & p. p. {Dovetailed}; p. pr.
& vb. n. {Dovetailing}.]
1. (Carp.)
   (a) To cut to a dovetail.
   (b) To join by means of dovetails.
2. To fit in or connect strongly, skillfully, or nicely; to
   fit ingeniously or complexly.
         He put together a piece of joinery so crossly
         indented and whimsically dovetailed . . . that it
         was indeed a very curious show.       --Burke.