babirusaPronunciation: /ˌbɑːbɪˈruːsə/Definition of babirusa noun a forest-dwelling wild pig with several upturned horn-like tusks, native to Malaysia. Babyrousa babyrussa, family Suidae Origin: late 17th century: from Malay, from babi 'hog' + rusa 'deer'babirusa in other Oxford dictionaries Definition of babirusa in the US English dictionary