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GLOSSARY George F. Bass Marver: flat stone or metal surface on which a gather is rolled to smooth and shape it Moil: glass between the blowpipe and blown vessel that was cracked off and discarded after being detached from the vessel; also called overblow Mold: form to give shape or relief decoration to a parison blown in it Mold-blown: formed by being blown in a mold Parison (or paraison): preliminary shape of a vessel or other object on the end of a blowpipe Polishing: smoothing a cold surface with a rotating wheel and abrasive Pontil: metal rod used to hold molten glass while it is worked Pontil mark: scar left on a vessel bottom after it has been knocked off the pontil Prunt: blob of glass applied as decoration or handle Quadrillage oblique: gridwork of squares or rectangles inclined to one side, reminiscent of a diamond design Relief-cut: deeply cut, leaving a raised decoration Rim: upper part of a vessel, above the sides, from where the wall turns in or out Rinceaux: ornamental scroll pattern Scratch-cut: shallowly cut by a sharp tool Seed: tiny bubbles in glass Slag: glassmaking waste Striations: streaks formed by the rotary motion of a blowpipe or from tools Thread: decorative trail of glass, usually of a different color than the vessel to which it is applied Trail: strand of molten glass applied to a vessel as decoration or to form a handle Wall: sides of a vessel, between its bottom or base and rim or neck Waster: glass that became defective during manufacture, normally discarded to become cullet Weathering: chemical deterioration of glass, causing iridescence , thinning, or pitting I owe thanks to Gladys Davidson Weinberg for early on teaching me that ceramic terms are not necessarily glass terms (e.g., “base” has different meanings for clay pots and glass vessels). Alembic: distilling apparatus Annealing: gradual cooling of newly blown glass Base: addition to the bottom of a vessel to enable it to stand Batch: mixture of raw materials (usually silica, soda or potash, and lime), often mixed with cullet, for making new glass Blowpipe: metal tube used for blowing glass Boss: thicker center of crown glass or vessel bottom Bottom: underside of the body of a vessel Cracking-off: removing a vessel from the blowpipe Cullet: scrap glass or chunks of raw glass intended to be remelted Cupping glass: cup that draws blood to the surface of the body for bloodletting when a partial vacuum has been induced inside Cut glass: glass decorated by a design scratched by a sharp tool or ground away by a rotating wheel (see hollow-cut, reliefcut , and scratch-cut) Engraved glass: cut glass Fire-polished: smoothed and rounded, as a rim, by being reheated Folding: doubling over a rim or the edge of a base to thicken and strengthen it Free-blown: blown without the use of a mold Gather: gob of molten glass removed from the furnace on a blowpipe or pontil Hollow-cut: cut in moderately deep, rounded grooves Iridescence: rainbow effect on weathered glass caused by light reflected from various layers of decomposition Kick: depression forced in the bottom of a vessel during its manufacture Knocking-off: removing a vessel from the pontil Lip: edge of a rim Looped: base or rim that has been folded over or under to form an air space in the fold Marquetry: decorative technique in which a small overlay of opaque glass is engraved with a hollow-cut design ...

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