What is (a) A movable slab or rubber used in grinding or polishing a surface of stone. (b) A tool on which lenses are fastened in a group, for polishing or grinding called?
runner — (Mech.) (a) A movable slab or rubber used in grinding or polishing a surface of stone. (b) A tool on which lenses are fastened in a group, for polishing or grinding. (Webster's 1913.)
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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- Published: 2026-07-17T00:00:00-07:00 · Modified: 2026-07-17T00:00:00-07:00