moo

American  

[moo] / mu /

verb (used without object)

mooed, mooing

1. to utter the characteristic deep sound of a cow; low.

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noun

plural

moos

1. a mooing sound.

moo British  

/ muː /

verb

1. (intr) (of a cow, bull, etc) to make a characteristic deep long sound; low

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interjection

1. an instance or imitation of this sound

Etymology

Origin of moo

First recorded in 1540–50; imitative

Example Sentences

With the afternoon sun beating down while the cows snort and moo, the workers inspect and clean the animals' teats, which are then attached to milking equipment.

From BBC • Feb. 19, 2026

“They moo a lot and poop a bit, but other than that, they’re pretty good workers,” Yancey says.

From Seattle Times • Aug. 18, 2023

In a sense, then, asking a sports legend to deliver a convincing movie performance is like asking a horse to moo.

From New York Times • Feb. 8, 2023

From kefta kebabs and tandoori chicken skewers to lamb souvlaki, Thai moo ping and negima yakitori, my hand will always gravitate to anything grilled on a stick.

From Washington Post • Aug. 7, 2022

The cows looked over and their eyes got big and their tails swished and they started to hold their heads up and moo, which means they’re pretty upset.

From "Orbiting Jupiter" by Gary D. Schmidt