doub‧le S1 W2 / dʌb ə l / 形容词 [通常用于名词前] #

1 of two parts consisting of two parts that are similar or exactly the same :

a double sink

a double wardrobe

the great double doors of the cathedral

Don’t park your car on double yellow lines.

2 two different uses combining or involving two things of the same type :

a double murder case

A lot of the jokes were based on double meaning .

3 twice as big twice as big, twice as much, or twice as many as usual :

a double whisky

The city was enclosed by walls of double thickness.

4 for two people made for two people or things to use → single :

Do you need a double bed or two singles?

a double room

a double garage

5 two letters/numbers British English spoken used to say that a particular letter or number is repeated :

My name’s Robbins with a double ‘b’.

The number is 869 double 2 (= 86922 ) .

6 flower a double flower has more than the usual number of petal s

→ doubly

double noun #

1 twice the size [可数和不可数名词] something that is twice as big, as much etc as usual or as something else :
Scotch and water, please – make it a double. ‘They offered me £10,000.’ ‘I’ll give you double.’ 2 room [可数名词] a room for two people in a hotel → single :
A double costs $95 a night. 3 tennis doubles [不可数名词] a game played between two pairs of players, especially in tennis → singles :
the men’s doubles → mixed doubles 4 baseball [可数名词] a hit in baseball which allows the batter to reach second base :
Walker led the inning with a double. 5 similar person sb’s double someone who looks very like someone else :
She’s her mother’s double. 6 in films [可数名词] an actor who takes the place of a more famous actor in a film, especially because the acting involves doing something dangerous :
I think they used a double in the shower scene. 7 at the double British English , on the double American English informal very quickly and without any delay :
He was told to get back to Washington on the double. 8 double or quits British English , double or nothing American English a situation in a game when you must do something that could either win you twice as much money or make you lose it all

double S3 verb #

1 [不及物和及物动词] to become twice as big or twice as much, or to make something twice as big or twice as much double in size/number/value etc Within two years the company had doubled in size. The church has doubled its membership in the last five years. double the size/number/amount etc (of something) A promise was given to double the number of police on duty. 2 [及物动词] ( also double over/up ) to fold something in half :
Take a sheet of paper and double it over. 3 [不及物动词] to hit the ball far enough to get to second base in a game of baseball

double as somebody/something phrasal verb to have a second use, job, or purpose as a particular thing :
The school doubled as a hospital during the war.

double back phrasal verb to turn around and go back the way you have come :
The driver doubled back and headed for Howard Bay. double back on yourself We kept getting lost and having to double back on ourselves.

double up phrasal verb 1 ( also double over ) to suddenly bend over at the waist because you are laughing so much or are in pain :
Emilio doubled over, grabbing his leg. be doubled up/over with laughter/pain etc Both the girls were doubled up with laughter. 2 to share something, especially a bedroom double up with You’ll have to double up with Susie while your aunt is here.

double adverb #

be bent double to be bent over a long way :
The trees were almost bent double in the wind. → see double at see 1 ( 29 )

double predeterminer #

twice as big, twice as much, or twice as many double the amount/number/size etc We’ll need double this amount for eight people. The value of the house is double what it was.