36 is the double of 18.
a double (binary) star.
a double (or dual) role for an actor.
a double bed.
a double room.
a sly double meaning.
a twofold increase.
an egg with a double yolk.
ate a double portion.
double chrysanthemums have many rows of petals and are usually spherical or hemispherical.
double doors.
dual controls for pilot and copilot.
duple (or double) time consists of two (or a multiple of two) beats to a measure.
every episode has its double and treble meaning.
he could be Gingrich's double.
He could never replicate his brilliant performance of the magic trick.
He doubled and vomited violently.
he hit a double to deep centerfield.
he was bent double with pain.
his eyes were double bright.
his first job in Hollywood was as a double for Clark Gable.
I decided his double was a bluff.
She doubles as his wife and secretary.
she was doubly rewarded.
she's the very image of her mother.
some people sleep better double.
spoke with forked tongue.
the dose is doubled.
the office of a clergyman is twofold.
public preaching and private influence.
The population doubled within 50 years.