Dou"ble-act`ing (?), a. Acting or operating in two directions or with both motions; producing a twofold result; as, a double-acting engine or pump.
Dou"ble-bank" (?), v. t. (Naut.) To row by rowers sitting side by side in twos on a bank or thwart.
To double-bank an oar, to set two men to pulling one oar.
Dou"ble-banked` (?), a. Applied to a kind of rowing in which the rowers sit side by side in twos, a pair of oars being worked from each bank or thwart.
{ Dou"ble-bar`reled (?), or -bar`relled }, a. Having two barrels; -- applied to a gun.
Dou"ble-beat` valve" (?). See under Valve.
Dou"ble-breast`ed (?), a. Folding or lapping over on the breast, with a row of buttons and buttonholes on each side; as, a double-breasted coat.
Dou"ble-charge` (?), v. t. 1. To load with a double charge, as of gunpowder.