a fixed or heavy object that keeps a door open or stops it from banging against a wall (防止门打开或撞墙的)制门器 ■(figurative)a heavy or bulky object (used especially in reference to a thick book) (喻)重物;厚物(尤指厚书) his sixth novel is a thumping 400-page doorstop. 他的第六本小说是一本400页的厚书。