stag /stæɡ/noun 14verb 2adverb 1forms 3 noun14 •An adult male deer, especially a red deer and especially one in high adulthood versus a young adult.The city recently carried out a deer census, determining there are 313 stags (males), 798 does (females) and 214 fawns (babies) in Nara Park. — 2024 •A social event for men held in honor of a groom on the eve of his wedding, attended by male friends of the groom; sometimes a fundraiser.The stag will be held in the hotel's ballroom. •[before a noun] An unmarried man; a bachelor; a man not accompanying a woman at a social event. •A stag beetle (family Lucanidae).Members of the genus Pasimachus […] can be confused with stag beetles […] but stags have elbowed antennae. — 2007 •One who applies for the allotment of shares in new projects, with a view to sell immediately at a premium, and not to hold the stock. •(UK, slang) Guard duty.Between shifts on stag or manning the radio, we grabbed a few hours sleep. — 2000 •(informal, slang) A man who allows his wife to have sex with other men.The stag gets a thrill from watching his vixen have sex with another man. — 2018 •An improperly or late castrated bull or ram – also called a bull seg (see note under ox). •(slang) An informer.We had two disturbers of the harmony of the ship; I mean two stags or informers, one named Robert Wilson, the other John Hewit, from the north of Ireland. — 1838 •An outside irregular dealer in stocks, who is not a member of the exchange. •(UK) A male turkey: a turkeycock. •(Scotland) A young horse (colt or filly). •The Eurasian wren, Troglodytes troglodytes. •(no longer used) A romping girl; a tomboy. verb2 •To watch; to dog, or keep track of. •(UK) To act as a "stag", an irregular dealer in stocks. adverb1 •Of a man, attending a formal social function without a date.My brother went stag to prom because he couldn't find a date. formsstagged · stagging · stags