boy

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A male child.
• noun A son.
• noun Often Offensive A man, especially a young man.
• noun Informal A man socializing in a group of men.
• noun Offensive A male servant or employee.
• interjection Used to express mild astonishment, elation, or disgust.

from The Century Dictionary.

• To treat as a boy, or as something belonging to or befitting a boy.
• To act or represent in the manner of a boy: in allusion to the acting by boys of women's parts on the stage.
• noun In India, as far north as the Nerbudda river, a palankin-bearer. Yule and Burnell, Anglo-Ind. Glossary.
• noun A male child, from birth to full growth, but especially from the end of infancy to the beginning of youth: also applied to a young man, implying immaturity, want of vigor or judgment, etc.
• noun In familiar or playful use (usually in the plural), a grown man regarded as one of the younger members of a family, as an intimate friend or associate, or as having in any respect a boyish relation or character.
• noun Specifically, in the United States— In the South, especially before the abolition of slavery, a negro man.
• noun An unscrupulous local politician, especially in a large city; one of the managers or subordinates of the “machine” of a party in local politics and elections: as, a ticket not acceptable to the boys.
• noun A young servant; a page: as, “boys, grooms, and lackeys,”
• noun [Supposed by some to be “a corruption of Hind. bhaiee, a servant”; but the Hind. word, prop. bhāī, means ‘brother,’ and boy in this use is merely the E. word. Cf. boy.] In India and the treaty-ports of China and Japan, etc., a native male servant, especially a personal servant; a butler or waiter, house-boy, office-boy, etc., as distinguished from a coolie or porter: in common use among foreigners.
• noun Old boy, a familiar name for the devil.
• noun Roaring boys. See roaring.

from the GNU version of the Collaborative International Dictionary of English.

• transitive verb To act as a boy; -- in allusion to the former practice of boys acting women's parts on the stage.
• noun A male child, from birth to the age of puberty; a lad; hence, a son.
• noun derog. In various countries, a male servant, laborer, or slave of a native or inferior race; also, any man of such a race; -- considered derogatory by those so called, and now seldom used.
• noun a boy (usually a chorister) elected bishop, in old Christian sports, and invested with robes and other insignia. He practiced a kind of mimicry of the ceremonies in which the bishop usually officiated.
• noun [Slang] the Devil.
• noun [Slang, Eng.] guineas.
• noun a popular English name of Southernwood (Artemisia abrotonum); -- called also lad's love.
• noun childish amusements; anything trifling.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Male servant.
• interjection Exclamation of surprise, pleasure or longing.
• verb To use the word boy to refer to someone.
• verb transitive To act as a boy (in allusion to the former practice of boys acting women's parts on the stage).

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a male human offspring
• noun (ethnic slur) offensive and disparaging term for Black man
• noun a friendly informal reference to a grown man
• noun a youthful male person