Definition of stag

• n. - The adult male of the red deer (Cervus elaphus), a large European species closely related to the American elk, or wapiti.
• n. - The male of certain other species of large deer.
• n. - A colt, or filly; also, a romping girl.
• n. - A castrated bull; -- called also bull stag, and bull seg. See the Note under Ox.
• n. - An outside irregular dealer in stocks, who is not a member of the exchange.
• n. - 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.
• n. - The European wren.
• v. i. - To act as a "stag", or irregular dealer in stocks.
• v. t. - To watch; to dog, or keep track of.