The after sail of a ship or bark, being a fore-and-aft sail attached to a boom and gaff; -- sometimes called driver. See Illust. under Sail.
A gaff-rigged sail set on a mizzen mast
A fore-and-aft sail, set with a gaff and boom at the aftermost part of a ship.
A ship's driver. A large sail occasionally set upon the mizzen yard or gaff, the foot being extended by a boom.
Lowest sail on mizzenmast; rigged somewhat fore and aft (between boom and gaff), rather than the general crossways arrangement of the rest of the sails.
Sail set on the lowest part of the mizzen or aftermost mast. Sail's head is set on a gaff (a spar attached to the mast.)
A fore and aft, gaff-rigged sail on the aft-most mast of a square-rigged vessel.
a fore-and-aft sail set on the aftermost lower mast (usually the mizzenmast) of a vessel
fore & aft sail astern, attached from a spanker boom attached to the aft-most mast used to help steer the ship. (See rigging illustration.)
A square sail, wide at the bottom and narrow at the top, attached to a boom, that projects straight back from the mizzen mast, along the long axis of the ship. Almost like a sail rudder.
A spanker is either of two kinds of sail.