double

(noun) a base hit on which the batter stops safely at second base. Synonyms: two-base hit, two-bagger, two-baser. Examples: "He hit a double to deep centerfield."

(noun) a stand-in for movie stars to perform dangerous stunts. Synonyms: stunt man, stunt woman. Examples: "His first job in hollywood was as a double for clark gable."

(noun) someone who closely resembles a famous person (especially an actor). Synonyms: image, look-alike. Examples: "He could be gingrich's double." "She's the very image of her mother."

(noun) a quantity that is twice as great as another. Examples: "36 is the double of 18."

(noun) raising the stakes in a card game by a factor of 2. Synonyms: doubling. Examples: "I decided his double was a bluff."

(verb) increase twofold. Synonyms: duplicate. Examples: "The population doubled within 50 years."

(verb) hit a two-base hit.

(verb) bend over or curl up, usually with laughter or pain. Synonyms: double over, double up. Examples: "He doubled and vomited violently."

(verb) do double duty; serve two purposes or have two functions. Examples: "She doubles as his wife and secretary."

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

(verb) make or do or perform again. Synonyms: duplicate, reduplicate, repeat, replicate. Examples: "He could never replicate his brilliant performance of the magic trick."

(adj) having more than one decidedly dissimilar aspects or qualities. Synonyms: dual, twofold, two-fold, treble, threefold, three-fold. Examples: "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."

(adj) consisting of or involving two parts or components usually in pairs. Synonyms: dual, duple. Examples: "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."

(adj) twice as great or many. Synonyms: doubled, twofold, two-fold. Examples: "Ate a double portion." "The dose is doubled." "A twofold increase."

(adj) used of flowers having more than the usual number of petals in crowded or overlapping arrangements. Synonyms: double (vs. single). Examples: "Double chrysanthemums have many rows of petals and are usually spherical or hemispherical."

(adj) used of homologous chromosomes associated in pairs in synapsis. Synonyms: bivalent (vs. multivalent) (vs. univalent).

(adj) large enough for two. Examples: "A double bed." "A double room."

(adj) having two meanings with intent to deceive. Synonyms: forked. Examples: "A sly double meaning." "Spoke with forked tongue."

(adv) downward and forward. Examples: "He was bent double with pain."

(adv) two together. Examples: "Some people sleep better double."

(adv) to double the degree. Synonyms: doubly, twice. Examples: "She was doubly rewarded." "His eyes were double bright."