Spar

spar. For dogtooth spar, see calcite; for fluorspar, see fluorite; for heavy spar, see barite; for satin spar, see calcite and gypsum. See also Iceland spar and feldspar.

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spar¹

1. 

a. any piece of nautical gear resembling a pole and used as a mast, boom, gaff, etc.

b. (as modifier): a spar buoy

2. a principal supporting structural member of an aerofoil that runs from tip to tip or root to tip

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spar²

an unaggressive fight

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spar

any of various minerals, such as feldspar or calcite, that are light-coloured, microcrystalline, transparent to translucent, and easily cleavable

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spar [spär]

(aerospace engineering)

A principal spanwise member of the structural framework of an airplane wing, aileron, stabilizer, and such; it may be of one-piece design or a fabricated section.

(mining engineering)

A small clay vein in a coal seam.

(mineralogy)

Any transparent or translucent, nonmetallic, light-colored, readily cleavable, crystalline mineral; examples are calespar and fluorspar.

(naval architecture)

A long, round stick of steel or wood, often tapered at one or both ends, and usually a part of a ship's masts or rigging.

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spar

1. A common rafter.

2. A bar for fastening a gate or door.

3. A heavy round timber.

4.See brotch.

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SPAR - Early system on Datatron 200 series. Listed in CACM 2(5):16 (May 1959).

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Spar 

the equipment above the deck of a ship that is used for mounting loading gear, signals, lights, and radio antennas. Spars are also used as observation and communication posts. On modern self-propelled ships, spars include the masts, topmasts, yards, gaffs, and loading booms. On sailing ships, spars are used for raising, turning, and furling the sails.