double

adjective

1
having two meanings with intent to deceive
a sly double meaning
spoke with forked tongue

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

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

Also useful for “double”:Unscrambler— Rearrange the letters in “double”