See also: ooo, ООО, and OOO Vietnamese Etymology Onomatopoeic. Pronunciation (Hà Nội) IPA(key): [ʔɔ˨˩ ʔɔ˧˦ ʔɔ˧˧] (Huế) IPA(key): [ʔɔ˦˩ ʔɔ˨˩˦ ʔɔ˧˧] (Saigon) IPA(key): [ʔɔ˨˩ ʔɔ˦˥ ʔɔ˧˧] Interjection ò ó o (onomatopoeia) cock-a-doodle-doo Related terms cục tác; cục ta cục tác chíp; chiếp gà Wikiwand - on Seamless Wikipedia browsing. On steroids.