From The Collaborative International Dictionary of English v.0.48:
Spanker \Spank"er\ (sp[a^][ng]k"[~e]r), n.
1. One who spanks, or anything used as an instrument for
spanking.
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2. (Naut.) 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.
--Totten.
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3. One who takes long, quick strides in walking; also, a fast
horse. [Colloq.]
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4. Something very large, or larger than common; a whopper, as
a stout or tall person. [Colloq.]
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Spanker boom (Naut.), a boom to which a spanker sail is
attached. See Illust. of Ship.
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From The Collaborative International Dictionary of English v.0.48:
Driver \Driv"er\, n. [From Drive.]
1. One who, or that which, drives; the person or thing that
urges or compels anything else to move onward.
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2. The person who drives beasts or a carriage; a coachman; a
charioteer, etc.; hence, also, one who controls the
movements of a any vehicle.
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3. An overseer of a gang of slaves or gang of convicts at
their work.
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4. (Mach.) A part that transmits motion to another part by
contact with it, or through an intermediate relatively
movable part, as a gear which drives another, or a lever
which moves another through a link, etc. Specifically:
(a) The driving wheel of a locomotive.
(b) An attachment to a lathe, spindle, or face plate to
turn a carrier.
(c) A crossbar on a grinding mill spindle to drive the
upper stone.
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5. (Naut.) The after sail in a ship or bark, being a
fore-and-aft sail attached to a gaff; a spanker. --Totten.
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6. An implement used for driving; as:
(a) A mallet.
(b) A tamping iron.
(c) A cooper's hammer for driving on barrel hoops.
(d) A wooden-headed golf club with a long shaft, for
playing the longest strokes.
[Webster 1913 Suppl.]
Driver ant (Zool.), a species of African stinging ant; one
of the visiting ants (Anomma arcens); -- so called
because they move about in vast armies, and drive away or
devour all insects and other small animals.
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