Webster
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Webster’s Revised Unabridged Dictionary · 1913

Calx

Calx, n.; pl. E. Calxes (#), L. Calces (#). [L. Calx, calcis. limestone; cf. Gr. χάλιξ gravel. κρόκη, κροκάλη, pebble, Skr. çarkarā gravel, Ir. carraic rock Gael. carraig, W. careg, stone. Cf. Chalk.]

1. (Chem.) (a) Quicklime. [Obs.] (b) The substance which remains when a metal or mineral has been subjected to calcination or combustion by heat, and which is, or may be, reduced to a fine powder.

☞ Metallic calxes are now called oxides.

2. Broken and refuse glass, returned to the post.

Webster’s Revised Unabridged Dictionary, Noah Porter, editor (Springfield, Mass.: G. & C. Merriam, 1913). Public domain. Text as transcribed by MICRA, Inc., from Project Gutenberg. Changed for Deep Dive Bible: Greek, which our source spelled in Latin letters, set in Greek letters; entries of one spelling merged into one article; Greek words our source left out (shown as “?”), read from the 1898 printing, from the same plates (the Library of Congress’s copy), where the place could be found with certainty.