呦
yōuyou

the bleating of the deer

Senses

呦 yōu (also yāo) oh

Exclamation expressing surprise, alarm, or sudden realization.

呦 you (also yao) [sentence-final]

Used at the end of a sentence to express exclamation or a reminder; same as 哟 yō.

呦 yōu call of a deer

The sound made by a deer, typically used in the reduplicated form 呦呦 yōu​yōu

References

same_as 呦/呦 → 哟/喲
same_as 哟/喲 → 呦/呦