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The Collaborative International Dictionary of English v.0.48 (gcide)

Pickup \Pick"up\, or Pick-up \Pick"-up`\, n. [Colloq., Cant, or
Slang]
1. Act of picking up, as, in various games, the fielding or
hitting of a ball just after it strikes the ground.
[Webster 1913 Suppl.]

2. That which picks up; specif.: (Elec.) same as {Brush} b.
[Webster 1913 Suppl.]

3. One that is picked up, as a meal hastily got up for the
occasion, a chance acquaintance, an informal game, etc.
[Webster 1913 Suppl.]

4. a social companion for the evening who is met without
prior arrangement, as at a singles bar; also, the act of
joining with such a companion in that fashion.
[PJC]

5. (Automobiles) acceleration; a measure of the ability of a
vehicle to accelerate.
[PJC]

6. (Electronics) a component of a phonograph which contains
the stylus and also components for converting the
vibrations of the stylus into electrical impulses for
subsequent processing into sound; often referred to as a
{cartridge}; also, the process of converting vibrations
into electrical impulses.
[PJC]

7. (Electronics) the conversion of sound or light into
electrical signals in a sound or image recording or
transmitting device.
[PJC]

8. (Vehicles) a small truck having an enclosed driver's
compartment (cab) but an open rear with usually low sides
and a tailgate. Also called {pickup truck}.
[PJC]

9. a hitchhiker who has been picked up.
[PJC]


Cartridge \Car"tridge\ (k[aum]r"tr[i^]j), n. [Formerly cartrage,
corrupted fr. F. cartouche. See {Cartouch}.] (Mil.)
A complete charge for a firearm, contained in, or held
together by, a case, capsule, or shell of metal, pasteboard,
or other material.
[1913 Webster]

{Ball cartridge}, a cartridge containing a projectile.

{Blank cartridge}, a cartridge without a projectile.

{Center-fire cartridge}, a cartridge in which the fulminate
occupies an axial position usually in the center of the
base of the capsule, instead of being contained in its
rim. In the Prussian needle gun the fulminate is applied
to the middle of the base of the bullet.

{Rim-fire cartridge}, a cartridge in which the fulminate is
contained in a rim surrounding its base.

{Cartridge bag}, a bag of woolen cloth, to hold a charge for
a cannon.

{Cartridge belt}, a belt having pockets for cartridges.

{Cartridge box}, a case, usually of leather, attached to a
belt or strap, for holding cartridges.

{Cartridge paper}.
(a) A thick stout paper for inclosing cartridges.
(b) A rough tinted paper used for covering walls, and also
for making drawings upon.
[1913 Webster]