from
The Collaborative International Dictionary of English v.0.48
Condenser \Con*dens"er\, n.
1. One who, or that which, condenses.
[1913 Webster]
2. (Physic)
(a) An instrument for condensing air or other elastic
fluids, consisting of a cylinder having a movable
piston to force the air into a receiver, and a valve
to prevent its escape.
(b) An instrument for concentrating electricity by the
effect of induction between conducting plates
separated by a nonconducting plate.
(c) A lens or mirror, usually of short focal distance,
used to concentrate light upon an object.
[1913 Webster]
3. (Chem.) An apparatus for receiving and condensing the
volatile products of distillation to a liquid or solid
form, by cooling.
[1913 Webster]
4. (Steam Engine) An apparatus, separate from the cylinder,
in which the exhaust steam is condensed by the action of
cold water or air. See Illust. of {Steam engine}.
[1913 Webster]
{Achromatic condenser} (Optics), an achromatic lens used as a
condenser.
{Bull's-eye condenser}, or {Bull's-eye} (Optics), a lens of
short focal distance used for concentrating rays of light.
{Injection condenser}, a vessel in which steam is condensed
by the direct contact of water.
{Surface condenser}, an apparatus for condensing steam,
especially the exhaust of a steam engine, by bringing it
into contact with metallic surface cooled by water or air.
[1913 Webster]
from
The Collaborative International Dictionary of English v.0.48
Lantern \Lan"tern\ (l[a^]n"t[~e]rn), n. [F. lanterne, L.
lanterna, laterna, from Gr. lampth`r light, torch. See
{Lamp}.]
1. Something inclosing a light, and protecting it from wind,
rain, etc.; -- sometimes portable, as a closed vessel or
case of horn, perforated tin, glass, oiled paper, or other
material, having a lamp or candle within; sometimes fixed,
as the glazed inclosure of a street light, or of a
lighthouse light.
[1913 Webster]
2. (Arch.)
(a) An open structure of light material set upon a roof,
to give light and air to the interior.
(b) A cage or open chamber of rich architecture, open
below into the building or tower which it crowns.
(c) A smaller and secondary cupola crowning a larger one,
for ornament, or to admit light; such as the lantern
of the cupola of the Capitol at Washington, or that of
the Florence cathedral.
[1913 Webster]
3. (Mach.) A lantern pinion or trundle wheel. See {Lantern
pinion} (below).
[1913 Webster]
4. (Steam Engine) A kind of cage inserted in a stuffing box
and surrounding a piston rod, to separate the packing into
two parts and form a chamber between for the reception of
steam, etc.; -- called also {lantern brass}.
[1913 Webster]
5. (Founding) A perforated barrel to form a core upon.
[1913 Webster]
6. (Zool.) See {Aristotle's lantern}.
[1913 Webster]
Note: Fig. 1 represents a hand lantern; fig. 2, an arm
lantern; fig. 3, a breast lantern; -- so named from the
positions in which they are carried.
[1913 Webster]
{Dark lantern}, a lantern with a single opening, which may be
closed so as to conceal the light; -- called also
{bull's-eye}.
{Lantern jaws}, long, thin jaws; hence, a thin visage.
{Lantern pinion}, {Lantern wheel} (Mach.), a kind of pinion
or wheel having cylindrical bars or trundles, instead of
teeth, inserted at their ends in two parallel disks or
plates; -- so called as resembling a lantern in shape; --
called also {wallower}, or {trundle}.
{Lantern shell} (Zool.), any translucent, marine, bivalve
shell of the genus {Anatina}, and allied genera.
{Magic lantern}, an optical instrument consisting of a case
inclosing a light, and having suitable lenses in a lateral
tube, for throwing upon a screen, in a darkened room or
the like, greatly magnified pictures from slides placed in
the focus of the outer lens.
[1913 Webster]
from
The Collaborative International Dictionary of English v.0.48
Bull's-eye \Bull's"-eye`\, n.
1. (Naut.) A small circular or oval wooden block without
sheaves, having a groove around it and a hole through it,
used for connecting rigging.
[1913 Webster]
2. A small round cloud, with a ruddy center, supposed by
sailors to portend a storm.
[1913 Webster]
3. A small thick disk of glass inserted in a deck, roof,
floor, ship's side, etc., to let in light.
[1913 Webster]
4. A circular or oval opening for air or light.
[1913 Webster]
5. A lantern, with a thick glass lens on one side for
concentrating the light on any object; also, the lens
itself. --Dickens.
[1913 Webster]
6. (Astron.) Aldebaran, a bright star in the eye of Taurus or
the Bull.
[1913 Webster]
7. (Archery & Gun.) The center of a target.
[1913 Webster]
8. A thick knob or protuberance left on glass by the end of
the pipe through which it was blown.
[1913 Webster]
9. A small and thick old-fashioned watch. [Colloq.]
[1913 Webster]
10. something that exactly succeeds in achieving its goal;
as, to score a bull's eye.
Syn: bell ringer, mark.
[WordNet 1.5]