What is the meaning of double?

noun

• A base hit on which the batter stops safely at second base.
  • usage: "he hit a double to deep centerfield"
  • synonyms: two-base hit, two-bagger, two-baser
• A stand-in for movie stars to perform dangerous stunts.
  • usage: "his first job in Hollywood was as a double for Clark Gable"
  • synonyms: stunt man, stunt woman
• Someone who closely resembles a famous person (especially an actor. )
  • usage: "he could be Gingrich's double"; "she's the very image of her mother"
  • synonyms: image, look-alike
• A quantity that is twice as great as another.
  • usage: "36 is the double of 18"
• Raising the stakes in a card game by a factor of 2.
  • usage: "I decided his double was a bluff"
  • synonyms: doubling

verb

• Increase twofold.
  • usage: "The population doubled within 50 years"
  • synonyms: duplicate
• Hit a two-base hit.
• Bend over or curl up, usually with laughter or pain.
  • usage: "He doubled and vomited violently"
  • synonyms: double over, double up
• Do double duty; serve two purposes or have two functions.
  • usage: "She doubles as his wife and secretary"
• Bridge: make a demand for (a card or suit. )
• Make or do or perform again.
  • usage: "He could never replicate his brilliant performance of the magic trick"
  • synonyms: duplicate, reduplicate, repeat, replicate

adjective

• 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-Frederick Harrison
  • synonyms: dual, twofold, two-fold, treble, threefold, three-fold
• Consisting of or involving two parts or components usually in pairs)
  • usage: "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 measure"
  • synonyms: dual, duple
• Twice as great or many.
  • usage: "ate a double portion"; "the dose is doubled"; "a twofold increase"
  • synonyms: doubled, twofold, two-fold
• Used of flowers having more than the usual number of petals in crowded or overlapping arrangements.
  • usage: "double chrysanthemums have many rows of petals and are usually spherical or hemispherical"
• Used of homologous chromosomes associated in pairs in synapsis.
  • synonyms: bivalent
• Large enough for two.
  • usage: "a double bed"; "a double room"
• Having two meanings with intent to deceive.
  • usage: "a sly double meaning"; "spoke with forked tongue"
  • synonyms: forked

adverb

• Downward and forward.
  • usage: "he was bent double with pain"
• Two together.
  • usage: "some people sleep better double"
• To double the degree.
  • usage: "she was doubly rewarded"; "his eyes were double bright"
  • synonyms: doubly, twice