DOUBLING

To multiply by two.

Example: "The company doubled their earnings per share over last quarter."

To fold over so as to make two folds.

Example: "To make a pleat, double the material at the waist."

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.

Example: "Our earnings have doubled in the last year."

To get a two-base hit.

Example: "The batter doubled into the corner."

(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.

Example: "A spork is a kind of fork that doubles as a spoon."

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.

Example: "Sorry, this store does not double coupons."

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.

Example: "Could you please repeat your last transmission? another station was doubling with you."