Noun doubling has 2 senses
  1. doubling - increase by a factor of two; "doubling with a computer took no time at all"
    --1 is a kind of
    Derived form: verb double1
  2. doubling, double - raising the stakes in a card game by a factor of 2; "I decided his double was a bluff"
    --2 is a kind of raise
    --2 is a part of card game, cards
    Derived form: verb double1
,Verb double has 6 senses
  1. double, duplicate - increase twofold; "The population doubled within 50 years"
    --1 is one way to multiply, manifold
    Derived forms: noun double4, noun doubling1, noun doubling2
    Sample sentences:
    They double their earnings this year
    Their earnings double this year
  2. double - hit a two-base hit
    --2 is one way to
    Derived form: noun double1
    Sample sentence:
    Somebody ----s
  3. double over, double, double up - bend over or curl up, usually with laughter or pain; "He doubled and vomited violently"
    --3 is one way to bend, flex
    Sample sentence:
    Somebody ----s
  4. double - do double duty; serve two purposes or have two functions; "She doubles as his wife and secretary"
    --4 is one way to
    function, work, operate, go, run
    Sample sentence:
    It is ----ing
  5. double - bridge: make a demand for (a card or suit)
    --5 is one way to
    bid, call
    Derived form: noun double5
    Sample sentence:
    Somebody ----s something
  6. duplicate, reduplicate, double, repeat, replicate - make or do or perform again; "He could never replicate his brilliant performance of the magic trick"
    --6 is one way to reproduce
    Derived form: noun double4
    Sample sentence:
    Somebody ----s something