כּוּר noun [masculine] smelting-pot or furnace (Arabic ; Late Hebrew id.; Aramaic id., ; Ethiopic ) — pot or furnace for smelting metals, but always in metaphor or simile of human sufferings in punishment or discipline: iron (figurative of Egypt as place of bondage) הַבַּרְזֶל ׳מִכּ Deuteronomy 4:20; Jeremiah 11:4, ׳הַבּ ׳מִתּוֺךְ כ 1 Kings 8:51; gold לַזָּהָב ׳כ Proverbs 17:3 = Proverbs 27:21 ("" מַצְרֵף); various metals Ezekiel 22:18,20,22; once בְּכוּר עֹ֑נִי Isaiah 48:10 in a smelting-pot of affliction.