dovetail
1. dove.tail \'d*v-.ta-l\ n : something resembling a dove's tail; esp : a flaring tenon and a mortise into which it fits tightly making an interlocking joint between two pieces 2. dovetail vt 1a: to join by means of dovetails 1b: to cut to a dovetail 2a: to fit skillfully to form a whole 2b: to fit together with : to fit together into a whole