(1):

(n.) An intimate; a companion.

(2):

(a.) Of or pertaining to a family; domestic.

(3):

(a.) Closely acquainted or intimate, as a friend or companion; well versed in, as any subject of study; as, familiar with the Scriptures.

(4):

(a.) Characterized by, or exhibiting, the manner of an intimate friend; not formal; unconstrained; easy; accessible.

(5):

(a.) Well known; well understood; common; frequent; as, a familiar illustration.

(6):

(a.) Improperly acquainted; wrongly intimate.

(7):

(n.) An attendant demon or evil spirit.

(8):

(n.) A confidential officer employed in the service of the tribunal, especially in apprehending and imprisoning the accused.