Detail \De*tail"\, n. (Arch. & Mach.) (a) A minor part, as, in a building, the cornice, caps of the buttresses, capitals of the columns, etc., or (called {larger details}) a porch, a gable with its windows, a pavilion, or an attached tower. (b) A detail drawing. {In detail}, in subdivisions; part by part; item by item; circumstantially; with particularity.