Entry 2 senses · 2 variants Webster, 1913 Sinople · Sin·o·ple · IPA n. n. 01 n. Ferruginous quartz, of a blood-red or brownish red color, sometimes with a tinge of yellow. 1. Ferruginous quartz, of a blood-red or brownish red color, sometimes with a tinge of yellow.(Min.) 02 n. The tincture vert; green. 1. The tincture vert; green.(Her.)