a.[Z]

1. 兩倍的；加倍的
   I'll give you double pay for working overtime.

   你加班我付你雙倍工錢。

2. 雙的；成雙的；雙層的
3. 兩人用的，雙人的
   We reserved a double room.

   我們訂了一間雙人房。

4. （意義，標準等）雙重的
   The date had a double significance.

   那個日子有雙重意義。

5. 兩面派的，表裡不一的
   That man has a double tongue.

   那人說話不老實。

6. （花）重瓣的

ad.

1. 雙倍地；加倍地
   Be double careful when you cross the street.

   你過街時要加倍小心。

2. 雙重地
3. 雙雙地
   We used to ride double on Nancy's horse.

   我們過去常常兩人同騎南茜的馬。

n.

1. 兩倍（數或量），加倍[C][U]
   His pay is the double of mine.

   他的薪資是我的兩倍。

2. 酷似的人或物[C]
   John is the double of his father.

   約翰長得酷似他父親。

3. 替身演員；特技替身[C]
   Two doubles were employed for this scene.

   拍這個場面僱用了兩個替角。

4. （賽馬等的）複式下注，二重彩[C]
5. （橋牌）叫加倍[C]
6. （擲標戲）雙倍（擲）[C]
7. 【棒】二壘安打[C]
8. 急轉彎；折回[C]
9. （旅館的）雙人房間
10. （網球等的）雙打[P]

vt.

1. 使加倍；是……的兩倍
   The population of Japan doubles that of Canada.

   日本的人口是加拿大的兩倍。

2. 把……對摺[（+back/over）]；握緊（拳頭）
   He doubled his slice of bread to make a sandwich.

   他將一片麵包對摺做成三明治。

3. 替代……演出；兼演（兩角）
4. 繞過（海岬等）航行

vi.

1. 變成兩倍；增加一倍
   The child birthrate in that area has doubled.

   該地區的嬰兒出生率已經增加了一倍。

2. （橋牌）叫加倍
3. 跑步
4. 往回跑；曲折迂迴（+back）
   The fox doubled back to avoid capture.

   狐狸順原路折回以避免被捕獲。

5. 替代演出[（+for）]；兼演（兩角）[（+as）]
   Mary, who played the part of the dancer, doubled as her mother.

   扮演舞蹈家的瑪麗同時兼演她的媽媽。

6. 【棒】擊出二壘安打

adj.

1. consisting of two equal, identical, or similar parts or things:
   double doors.
   ▸having two different roles or interpretations.
   ▸(of a flower) having more than one circle of petals.
   ▸(of a domino) having the same number of pips on each half.
2. having twice the usual size, quantity, or strength:
   a double brandy.
3. designed to be used by two people.
4. Music  lower in pitch by an octave.

predet.

adv.

n.

1. a thing which is twice as large as usual or is made up of two parts.
   ▸a system of betting in which the winnings from the first bet are transferred to a second.
   ▸Darts  a hit on the ring enclosed by the two outer circles of a dartboard, scoring double.
   ▸Bridge  a call that increases the penalty points for the defenders if the declarer fails to make the contract.
2. a person who looks exactly like another.
3. Brit. two sporting victories or championships in the same season, event, etc.
4. (doubles) a game involving sides made up of two players.
5. Bell-ringing  a system of change-ringing using five bells, with two pairs changing places each time.

pron.

v.

1. make or become double.
   ▸ (double up) share a room.
   ▸ (double up) use the winnings from a bet as the stake for another bet.
   ▸Bridge  call a double.
2. fold or bend over on itself.
   ▸ (double up) bend over or curl up, typically with pain or mirth.
3. (double back) go back in the direction one has come.
4. (double up as) be used in or play another, different role.
5. Music  add the same note in a higher or lower octave to (a note).
6. Snooker  pot (a ball) by making it rebound off a cushion.