1. a familiar friend or associate.
2. Witchcraft & Demonology: an animal, as a cat, that embodies a supernatural spirit and aids a witch in performing magic. b) a familiar spirit.
3. Roman Catholic Church: a) an officer of the Inquisition, employed to arrest accused or suspected persons. b) a person who belongs to the household of the pope or a bishop, rendering domestic though not menial service.
4. commonly or generally known or seen; well acquainted; thoroughly conversant.
5. Informal; easygoing; unceremonious; unconstrained.
6. closely intimate or personal.
7. unduly intimate; overly personal; taking liberties; presuming.