agate

A semitransparent, uncrystallized silicate mineral and semiprecious stone, presenting various tints in the same specimen, with colors delicately arranged and often curved in parallel alternating dark and light stripes or bands, or blended in clouds; various authorities call it a variety of chalcedony, a variety of quartz, or a combination of the two.

A marble made from agate.

One fourteenth of an inch.

(US, old-fashioned) The size of type between pearl and nonpareil, standardized as 5+¹⁄₂-point.

A tool used by gold-wire drawers, bookbinders, etc.;—so called from the agate fixed in it for burnishing.

[usually plural] (slang) A testicle.

(no longer used) A diminutive person; so called in allusion to the small figures cut in agate for rings and seals.

(no longer used) On the way; agoing.