From an unused root meaning to mingle (water with wine); tempered wine -- liquor.
H4197. mezeg
[מֶ֫זֶג] noun masculine mixture, i.e. mixed wine (Late Hebrew id., Aramaic, and thence מְזִיגָא מִזְנָא,; ; Arabic water mixed with wine, mixture (Fräl.c.), compare , ); — הַמָּ֑זֶג אַליֶֿחְסַר Cant 7:3 (Tosafoth here spiced wine: compare LevyNHWB iii. 61).
מזה (√ of following; probably compare Arabic suck out, compare DrDeuteronomy 32:24).