double

increase twofold

• “The population doubled within 50 years”

hit a two-base hit

bend over or curl up, usually with laughter or pain

• “He doubled and vomited violently”

do double duty; serve two purposes or have two functions

• “She doubles as his wife and secretary”

bridge: make a demand for (a card or suit)

make or do or perform again

• “He could never replicate his brilliant performance of the magic trick”

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

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 measure”

twice as great or many

• “ate a double portion”
• “the dose is doubled”
• “a twofold increase”

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”

used of homologous chromosomes associated in pairs in synapsis

large enough for two

• “a double bed”
• “a double room”

having two meanings with intent to deceive

• “a sly double meaning”
• “spoke with forked tongue”

a base hit on which the batter stops safely at second base

• “he hit a double to deep centerfield”

a stand-in for movie stars to perform dangerous stunts

• “his first job in Hollywood was as a double for Clark Gable”

someone who closely resembles a famous person (especially an actor)

• “he could be Gingrich”
• “;”
• “s the very image of her mother”

a quantity that is twice as great as another

• “36 is the double of 18”

raising the stakes in a card game by a factor of 2

• “I decided his double was a bluff”

downward and forward

• “he was bent double with pain”

two together

• “some people sleep better double”

to double the degree

• “she was doubly rewarded”
• “his eyes were double bright”