Uncle (Latin avunculus "little grandfather," diminutive of avus "grandfather,") may refer to: A family relationship, either the brother of a parent or the husband of a sister of a parent. A woman with an equivalent relationship's an aunt, and the reciprocal relationship's that of a nephew or niece. A title of respect for elders (for example older cousins, neighbors, acquaintances, as well as total strangers), especially in Russia, Japan, Nigeria, Jamaica, India, Pakistan, Turkey, China, Maori… (More on Uncle)