double double /ˈdʌbəl/

adjective

1. () Consisting of or involving two parts or components usually in pairs  ( duple , dual , double )
   consisting of or involving two parts or components usually in pairs
    An egg with a double yolk
   an egg with a double yolk
    A double (binary) star
   a double (binary) star
    Double doors
   double doors
    Dual controls for pilot and copilot
   dual controls for pilot and copilot
    Duple (or double) time consists of two (or a multiple of two) beats to a measure
   duple (or double) time consists of two (or a multiple of two) beats to a measure
   
2. () Having more than one decidedly dissimilar aspects or qualities  ( dual , three-fold , threefold , double , treble , two-fold , twofold , trifold )
   having more than one decidedly dissimilar aspects or qualities
    A double (or dual) role for an actor
   a double (or dual) role for an actor
    The office of a clergyman is twofold; public preaching and private influence
   the office of a clergyman is twofold; public preaching and private influence
    Every episode has its double and treble meaning
   every episode has its double and treble meaning
   
3. () Twice as great or many  ( doubled , two-fold , bifold , double , twofold )
   twice as great or many
    Ate a double portion
   ate a double portion
    The dose is doubled
   the dose is doubled
    A twofold increase
   a twofold increase
   
4. Having two meanings with intent to deceive  ( double , forked )
   having two meanings with intent to deceive
    A sly double meaning
   a sly double meaning
    Spoke with forked tongue
   spoke with forked tongue
   
5. Large enough for two  ( double )
   large enough for two
    A double bed
   a double bed
    A double room
   a double room
   
6. (genetics) used of homologous chromosomes associated in pairs in synapsis  ( bivalent , double )
   (genetics) used of homologous chromosomes associated in pairs in synapsis
   
7. (botany) used of flowers having more than the usual number of petals in crowded or overlapping arrangements  ( double )
   (botany) 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
   double chrysanthemums have many rows of petals and are usually spherical or hemispherical
   

adverb

1. To double the degree  ( double , doubly , twice )
   to double the degree
    She was doubly rewarded
   she was doubly rewarded
    His eyes were double bright
   his eyes were double bright
   
2. Two together  ( double )
   two together
    Some people sleep better double
   some people sleep better double
   
3. Downward and forward  ( double )
   downward and forward
    He was bent double with pain
   he was bent double with pain
   

noun

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

verb

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