Teetee (?), n. [Sp. tití.] 1. (Zoöl.) Any one of several species of small, soft-furred South American monkeys belonging to Callithrix, Chrysothrix, and allied genera; as, the collared teetee (Callithrix torquatus), and the squirrel teetee (Chrysothrix sciurea). Called also pinche, titi, and saimiri. See Squirrel monkey, under Squirrel.
[Webster]

2. (Zoöl.) A diving petrel of Australia (Halodroma wrinatrix).
[Webster]