Double

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Related to doubling: Doubling time, doubling up

Double

The purchase of a call and a put on the same underlying asset with the same strike price and the same expiration date. A double enables one to profit from whatever price movement the underlying takes. That is, if the price goes up, the holder exercises the call, and if it goes down, he/she exercises the put. If one of the options is in the money, the other must be out of the money.
References in classic literature ?
White Fang still danced on, dodging and doubling, leaping in and out, and ever inflicting damage.
I'll give it to him, make your mind easy about that," said Charlie, with an ominous doubling up of his fist.
The bear wandered, now this way and now that, doubling back and forth and crossing his trail in circles, so that at the end he was near where Keesh had first come upon him.
Nevertheless, it is conceivable that the general pattern of an organ might become so much obscured as to be finally lost, by the atrophy and ultimately by the complete abortion of certain parts, by the soldering together of other parts, and by the doubling or multiplication of others,--variations which we know to be within the limits of possibility.
A ship doubling the point under sail, appeared as a bright white speck.
Holding his weight by his arms, and in mid-air doubling his body at the hips, he let fly with both feet.