When a male human reaches adulthood, he is usually described as a man. According to the Merriam-Webster Dictionary, a boy is "a male child from birth to adulthood". [1]

The meaning of BOY is a male child from birth to adulthood. How to use boy in a sentence.

BOY definition: a male child, from birth to full growth, especially one less than 18 years of age. See examples of boy used in a sentence.

BOY definition: 1. a male child or, more generally, a male of any age: 2. a group of male friends: 3. an…. Learn more.

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

You can refer to a man as a boy, especially when you are talking about him in an affectionate way.

4 days ago · "My dear girl, what has he done?" said Mrs. Mallowe, sweetly. It is noticeable that ladies of a certain age call each other "dear girl," just as commissioners of twenty-eight years' standing …