An uncle is usually defined as a male relative who is a sibling of a parent or married to a sibling of a parent, as well as the parent of the cousins. Uncles who are related by birth are second-degree …

The meaning of UNCLE is the brother of one's father or mother. How to use uncle in a sentence.

Definition of uncle noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

UNCLE definition: 1. the brother of someone's mother or father, or the husband of someone's aunt or uncle: 2. any…. Learn more.

uncle (ˈʌŋkəl) n 1. a brother of one's father or mother 2. the husband of one's aunt

Feb 10, 2026 · uncle (third-person singular simple present uncles, present participle uncling, simple past and past participle uncled) (transitive, colloquial) To address somebody by the term uncle.

WordReference Random House Learner's Dictionary of American English © 2026 un•cle /ˈʌŋkəl/ n. [countable] a brother of one's father or mother. an aunt's husband. Idioms Idioms, Informal Terms …

Your uncle is the brother of your mother or father, or the husband of your aunt or uncle. My uncle was the mayor.

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UNCLE definition: a brother of one's father or mother. See examples of uncle used in a sentence.