CULLET

Etymology

Variant of collet.

Noun

cullet (countable and uncountable, plural cullets)

Scrap glass which is melted down for reuse.

A small central plane in the back of a cut gem.

Source: Wiktionary

Cul"let (kl"lt), n. Etym: [From Cull, v. t. ]

Definition: Broken glass for remelting.

Cul"let, n. Etym: [A dim. from F. cul back.]

Definition: A small central plane in the back of a cut gem. See Collet, 3 (b).

Source: Webster’s Unabridged Dictionary 1913 Edition