Definitions
1.nounA young male."Kate is dating a boy named Jim."
2.noun(diminutive) A male child: a son of any age.
3.noun(diminutive) A male of any age, particularly one rather younger than the speaker.
4.nounA male of low station, (especially as pejorative) a worthless male, a wretch; a mean and dishonest male, a knave.
5.noun(now rare and usually offensive outside some Commonwealth nations) A male servant, slave, assistant, or employee, particularly:
6.nounAny non-white male, regardless of age.
7.nounA male animal, especially, in affectionate address, a male dog."Are you getting a boy cat or a girl cat?"
8.nounA former low rank of various armed services; a holder of this rank.
9.nounHeroin.
10.noun(somewhat childish) A male (tree, gene, etc).
11.verbTo use the word “boy” to refer to someone."Don't boy me!"
12.verbTo act as a boy (in allusion to the former practice of boys acting women's parts on the stage).
13.interjectionExclamation of surprise, pleasure or longing."Boy, I wish I could go to Canada!"