Jet: Difference between revisions

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n.) A variety of lignite, of a very compact texture and velvet black color, susceptible of a good polish, and often wrought into mourning jewelry, toys, buttons, etc. Formerly called also black amber.
n.) The sprue of a type, which is broken from it when the type is cold.

Revision as of 07:19, 1 June 2024

n.) The sprue of a type, which is broken from it when the type is cold.