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3 definitions found

From: Webster's Revised Unabridged Dictionary (1913)

 Lan·tern n.
 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.
 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.
 3. Mach. A lantern pinion or trundle wheel. See Lantern pinion (below).
 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.
 5. Founding A perforated barrel to form a core upon.
 6. Zool. See Aristotle's lantern.
 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.
 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.

From: Webster's Revised Unabridged Dictionary (1913)

 Pin·ion, n.
 1. A feather; a quill.
 2. A wing, literal or figurative.
    Swift on his sooty pinions flits the gnome.   --Pope.
 3. The joint of bird's wing most remote from the body.
 4. A fetter for the arm.
 5. Mech. A cogwheel with a small number of teeth, or leaves, adapted to engage with a larger wheel, or rack (see Rack); esp., such a wheel having its leaves formed of the substance of the arbor or spindle which is its axis.
 Lantern pinion. See under Lantern.
 Pinion wire, wire fluted longitudinally, for making the pinions of clocks and watches. It is formed by being drawn through holes of the shape required for the leaves or teeth of the pinions.

From: WordNet (r) 2.0

 lantern pinion
      n : a small pinion having cylindrical bars instead of teeth,
          used chiefly in inexpensive clocks [syn: lantern wheel]