The term 'fit together well' can be described by four different crossword solutions: CLICK (5 letters), meshed (6 letters), dovetailed (8 letters) and MESH (4 letters). CLICK is a verb meaning to press a button or switch, usually on a computer or electronic device. Meshed is an adjective meaning interlaced or intertwined. Dovetailed is an adjective meaning to fit together perfectly, like two pieces of a puzzle. Finally, MESH is a noun meaning a network of intersecting lines or a fabric with a loose, open weave. All four of these words describe the idea of fitting together well.