There are 3 definitions of OU in English:

OU1

Line breaks: OU
Pronunciation: /əʊˈjuː/

Entry from British & World English dictionary

abbreviation

(In the UK) Open University.

Definition of OU in:

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Word of the day impudicity
Pronunciation: ˌimpyəˈdisitē
noun
lack of modesty

There are 3 definitions of OU in English:

ou2

Line breaks: ou

Entry from British & World English dictionary

noun (plural ouens /ˈəʊənz/ or ous)

South African informal
A man.

Origin

Afrikaans, probably from Dutch ouwe 'old man'.

Definition of OU in:

There are 3 definitions of OU in English:

ou3

Syllabification: ou
Pronunciation: /ˈōˌo͞o
 
/

noun

A fruit-eating Hawaiian honeycreeper with a stout bill and green and yellow plumage. Compare with o-o.
  • Psittirostra psittacea, family Drepanididae

Origin

late 19th century: the name in Hawaiian.

Definition of OU in: