- ai
- aiai1 [ī]interj.used to express sorrow, pity, pain, etc.ai2 [ä′ē΄]n.pl. ais [ä′ēz΄] [Tupí ai, hai < the animal's cry]a South American sloth (Bradypus tridactylus) with a greenish coat: the color is caused by algae that live on its hair
English World dictionary. V. Neufeldt. 2014.