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.-a diving petrel of australia (halodroma wrinatrix).