H6320. puk
מּוּךְ noun [masculine] antimony, stibium (Late Hebrew = Biblical Hebrew; compare possibly Arabic open, separate; Syriac pulverize; but מּוּךְ perhaps foreign word); — black mineral powder, for increasing brilliance of eyes by darkening edges of lids; עֵינֶוהָ בֵּמּ ׳וַתָּשֶׂם [2Kin 9:30], וגו ׳תִּקְרְעִי [Jer 4:30]; (on practice in Arabic see WeGGN, 1893, 443; in Egypt, LaneMod.Egypt.ed. 5, i. 45 f.); figurative [Isa 54:11] of dark cement setting off precious stones (but WeDLZ, Aug. 2, 1890 CheHpt and others read נֹפֶךְ q. v.); פ ׳אַבְנֵי [1Chr 29:2] are perhaps stones of brilliant hue of antimony. — compare proper name הַמּוּךְ קֶרֶן, and כָּחַל.