What is the meaning of Ou?

A probably extinct species of Hawaiian honeycreeper, Psittirostra psittacea.

A fellow, guy, bloke.

an old fellow, guy, bloke

attributive form of oud

cloud

I

or

A letter of the Haitian Creole alphabet, written in the Latin script.

you (singular)

how

Hanyu Pinyin reading of cmn, 嘔／呕

Nonstandard spelling of ōu.

Nonstandard spelling of óu.

Nonstandard spelling of ǒu.

Nonstandard spelling of òu.

you (second-person singular formal personal pronoun)

Alternative form of uou

Alternative form of yow

within

or

where

water

water

egg

Alternative form of oauã to lay an egg (like a hen)

egg

ball, testicle

whoa! (command to an animal to stop)

inflection of oir:

1. third-person singular present indicative
2. second-person singular imperative

third-person singular present indicative

second-person singular imperative

oi!, hey!, used for calling out to someone

or

either...or

or

whoa! (order for cattle)

oh! (vocative)

yours, your Second person singular possessive, o-type.

used to get someone's attention; oi, hey

Rōmaji transcription of おう

or

or (connects at least two alternative words, phrases, clauses, sentences, etc. each of which could make a passage true)

or (connects two equivalent names)

either … or

inclusive or (connective which yields true when at least one of the predicates is true)

egg

ball (testicle)

egg

from

detached

tired

distant

out

Alternative form of ovu

an exclamation to get attention.

a protest or reprimand.

an expression of surprise.

an informal greeting, similar to ciau.

Alternative form of au

Source: wiktionary.org