consisting of two equal, identical, or similar parts or things

double doors

lower in pitch by an octave

twice as much or as many

the jail now houses almost double the number of prisoners it was designed for

I'll pay double what I paid last time

at or to twice the amount or extent

you have to be careful, and this counts double for older people

a thing which is twice as large as usual or is made up of two standard units or things

join the two sleeping bags together to make a double

a person who looks exactly like another

you could pass yourself off as his double

(especially in tennis and badminton) a game or competition involving sides made up of two players

the semi-finals of the doubles

a system of change-ringing using five bells, with two pairs changing places each time

a pair of victories in the same sport in two different competitions

Manchester United won the double twice

a number or amount which is twice as large as a contrasting or usual number or amount

he paid double and had a room all to himself

become twice as much or as many

profits doubled in one year

fold or bend (paper, cloth, or other material) over on itself

the muslin is doubled and then laid in a sieve over the bowl

be used in or play another, different role

a laser printer doubles as a photocopier