• a base hit on which the batter stops safely at second base; "he hit a Double to deep centerfield"
• raising the stakes in a card game by a factor of 2; "I decided his Double was a bluff"
• a quantity that is twice as great as another; "36 is the Double of 18"
• someone who closely resembles a famous person (especially an actor); "he could be Gingrich''s Double"; "she''s the very image of her mother"
• a stand-in for movie stars to perform dangerous stunts; "his first job in Hollywood was as a Double for Clark Gable"
• increase twofold; "The population Doubled within 50 years"
• hit a two-base hit
• do Double duty; serve two purposes or have two functions; "She Doubles as his wife and secretary"
• make or do or perform again; "He could never replicate his brilliant performance of the magic trick"
• bend over or curl up, usually with laughter or pain; "He Doubled and vomited violently"
• bridge: make a demand for (a card or suit)
• having two meanings with intent to deceive; "a sly Double meaning"; "spoke with forked tongue"
• large enough for two; "a Double bed"; "a Double room"
• used of homologous chromosomes associated in pairs in synapsis
• twice as great or many; "ate a Double portion"; "the dose is Doubled"; "a twofold increase"
• consisting of or involving two parts or components usually in pairs; "an egg with a Double yolk"; "a Double (binary) star"; "Double doors"; "dual controls for pilot and copilot"; "duple (or Double) time consists of two (or a multiple of two) beats to a me
• having more than one decidedly dissimilar aspects or qualities; "a Double (or dual) role for an actor"; "the office of a clergyman is twofold; public preaching and private influence"- R.W.Emerson; "every episode has its Double and treble meaning"-Frederic
• used of flowers having more than the usual number of petals in crowded or overlapping arrangements; "Double chrysanthemums have many rows of petals and are usually spherical or hemispherical"
• to Double the degree; "she was doubly rewarded"; "his eyes were Double bright"
• two together; "some people sleep better Double"
• downward and forward; "he was bent Double with pain"

'Double' in other languages