(UK) said to acknowledge a double entendre or something that sounds rude

(UK, West Country) Used to indicate agreement. / (UK, West Country) Used to introduce a refutation, sometimes sarcastically. / (UK, West Country) Used to imply innuendo.

(linguistics) The vowel sound, /ʊ/, of the "oo" in the word "good", as opposed to the "oo" in the word "mood".

(linguistics) The vowel sound /uː/, as in the word "mood" as opposed to "good".

Alternative spelling of ooh la la

(software) Acronym of object-oriented software engineering.

(botany) A large nonmotile egg cell formed in an oogonium and ready for fertilization

plural of oosphere

(biology) A fertilized female zygote, having thick chitinous walls, that develops from a fertilized oosphere in some algae and fungi

plural of oospore