Twice the number, amount, size, etc.
A person who resembles and stands in for another person, often for safety purposes
A drink with two portions of alcohol.
A ghostly apparition of a living person; doppelgänger.
A sharp turn, especially a return on one's own tracks.
A redundant item for which an identical item already exists.
A two-base hit.
A call that increases certain scoring points if the last preceding bid becomes the contract.
A strike in which the object ball is struck so as to make it rebound against the cushion to an opposite pocket.
A bet on two horses in different races in which any winnings from the first race are placed on the horse in the later race.
The narrow outermost ring on a dartboard.
A hit on this ring.
A tile that has the same value (i.e., the same number of pips) on both sides.
A double-precision floating-point number.
Two competitions, usually one league and one cup, won by the same team in a single season.
A boat for two scullers.
The feat of scoring twice in one game.
(chiefly swimming and track) The feat of winning two events in a single meet or competition.
A former French coin worth one-sixth of a sou.
(Guernsey) A copper coin worth one-eighth of a penny.
Playing the same part on two instruments, alternately.
A double feast.
The double time, a marching cadence (pace) approaching running speed.
To multiply by two.
To fold over so as to make two folds.
To be the double of; to exceed by twofold; to contain or be worth twice as much as.
To increase by 100%, to become twice as large in size.
To get a two-base hit.
(sometimes followed by up) To clench (a fist).
(often followed by together or up) To join or couple.
To repeat exactly; copy.
(often followed by as) To play a second part or serve a second role.
To turn sharply, following a winding course.
To sail around (a headland or other point).
To duplicate (a part) either in unison or at the octave above or below it.
(usually followed by "on") To be capable of performing (upon an additional instrument).
To make a call that will double certain scoring points if the preceding bid becomes the contract.
To double down.
To cause (a ball) to rebound from a cushion before entering the pocket.
(followed by for) To act as substitute.
To go or march at twice the normal speed.
To multiply the strength or effect of by two.
To unite, as ranks or files, so as to form one from each two.
(of a station) To transmit simultaneously on the same channel as another station, either unintentionally or deliberately, causing interference.
Made up of two matching or complementary elements.
Of twice the quantity.
Of a family relationship, related on both the maternal and paternal sides of a family.
Designed for two users.
Folded in two; composed of two layers.
Stooping; bent over.
Having two aspects; ambiguous.
False, deceitful, or hypocritical.
Of flowers, having more than the normal number of petals.
Of an instrument, sounding an octave lower.
Of time, twice as fast.
Twice over; twofold; doubly.
Two together; two at a time. (especially in see double)