·noun One who muffles.
II. Muffler ·noun A kind of mitten or boxing glove, ·esp. when stuffed.
III. Muffler ·noun A cushion for terminating or softening a note made by a stringed instrument with a keyboard.
IV. Muffler ·noun Anything used in muffling; ·esp., a scarf for protecting the head and neck in cold weather; a tippet.
V. Muffler ·add. ·noun Any of various devices to deaden the noise of escaping gases or vapors, as a tube filled with obstructions, through which the exhaust gases of an internal-combustion engine, as on an automobile, are passed (called also silencer).