muffler

noun

muf·​fler ˈmə-flər 

1

a

: a scarf worn around the neck

b

: something that hides or disguises

2

: a device to deaden noise

especially : one forming part of the exhaust system of an automotive vehicle

mufflered

ˈmə-flərd 

adjective

Examples of muffler in a Sentence

Recent Examples on the Web

That includes one of the factory mufflers and the catalytic converter and associated emissions-control sensors, making this an easy install that doesn’t raise any legal questions. — Stephen Edelstein, The Drive, 7 Nov. 2026

Heemeyer owned a muffler shop in the town and had been engaged in a long-running series of property and zoning disputes with local authorities. — Joshua Yaffa, New Yorker, 2 Nov. 2026

The active exhaust system has been given a unique more muted acoustic tune thanks to sophisticated double gas-flow mixing inside the rear muffler. — New Atlas, 2 Oct. 2026

Under the new law, only those that use liquid fuel require a muffler. — Madison Smalstig, Sacbee.com, 1 Oct. 2026

Word History

First Known Use

circa 1536, in the meaning defined at sense 1a

Kids Definition

muffler

noun

muf·​fler ˈməf-lər 

1

: a scarf worn to protect the neck

2

: something that deadens noises

especially : a device attached to the exhaust system of an automobile