An Etymological Dictionary of the German Language/gießen
gießen, vb., from the equiv. MidHG. gieȥen, OHG. gioȥan, ‘to pour, cast metal, form, pour out, spill, stream’; corresponding to Goth. giutan, ‘to pour’ (OIc. gjóta, ‘to throw young, blink with the eyes’), AS. geótan, Du. gieten; a strong verbal root common to Teut., from pre-Teut. ghud, whence also the Lat. root fud in fundo, ‘I pour.’ This root is probably connected with the equiv. root ghu (Gr. χυ-, in χέω, χῦμα, Sans. root hu, ‘to sacrifice’). See also Götze.