boy

A young male.

“Kate is dating a boy named Jim.”

(diminutive) A male child: a son of any age.

(diminutive) A male of any age, particularly one rather younger than the speaker.

A male of low station, (especially as pejorative) a worthless male, a wretch; a mean and dishonest male, a knave.

(now rare and usually offensive outside some Commonwealth nations) A male servant, slave, assistant, or employee, particularly:

Any non-white male, regardless of age.

A male animal, especially, in affectionate address, a male dog.

“Are you getting a boy cat or a girl cat?”

A former low rank of various armed services; a holder of this rank.

Heroin.

(somewhat childish) A male (tree, gene, etc).

To use the word “boy” to refer to someone.

“Don't boy me!”

To act as a boy (in allusion to the former practice of boys acting women's parts on the stage).

Exclamation of surprise, pleasure or longing.

“Boy, I wish I could go to Canada!”