Dou·ble, v. t. [imp. & p. p. Doubled p. pr. & vb. n. Doubling ]
1. To increase by adding an equal number, quantity, length, value, or the like; multiply by two; as, to double a sum of money; to double a number, or length.
Double six thousand, and then treble that. --Shak.
2. To make of two thicknesses or folds by turning or bending together in the middle; to fold one part upon another part of; as, to double the leaf of a book, and the like; to clinch, as the fist; -- often followed by up; as, to double up a sheet of paper or cloth.
Then the old man
Was wroth, and doubled up his hands. --Tennyson.
3. To be the double of; to exceed by twofold; to contain or be worth twice as much as.
Thus reënforced, against the adverse fleet,
Still doubling ours, brave Rupert leads the way. --Dryden.
4. To pass around or by; to march or sail round, so as to reverse the direction of motion.
Sailing along the coast, the doubled the promontory of Carthage. --Knolles.
5. Mil. To unite, as ranks or files, so as to form one from each two.
adj 1: twice as great or many; "ate a double portion"; "the dose is
doubled"; "a twofold increase" [syn: double, twofold]
2: folded in two; "doubled sheets of paper"