COLUMN n.
A kind of pillar; a cylindrical or polygonal support for a roof, ceiling, statue, etc., somewhat ornamented, and usually composed of base, shaft, and capital. See Order.
CONDENSER n.
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. 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 concentratin…
CORE n.
The prtion of a mold which shapes the interior of a cylinder, tube, or other hollow casting, or which makes a hole in or through a casting; a part of the mold, made separate from and inserted in it, for shaping some part of the casting, the form of which is not determined by that of the pattern.