Other forms: dovetailed; dovetails; dovetailing
A dovetail is a joint in woodworking where two sides are fitted together with interlocking pieces. You can also use the word dovetail to show how other things fit well together — like how your picnic plans nicely dovetail with the sunny forecast.
A well-made dovetail is a beautiful thing, with wooden projections that slide into notches perfectly, the two sides forming a corner. When things fit this way, you can say they dovetail — they fit easily and work well together. Your plan to dress up as a Jedi knight dovetails well with your brother's Darth Vader costume, for example. Dovetails got their name from the tail feather-like shape of the joint's pieces.