dhreg- / Indo-European roots
To draw, glide.Oldest form *dhreg̑-, becoming *dhreg- in centum languages.
1. drink from Old English drincan, to drink, from nasalized Germanic form *drenkan, to draw into the mouth, drink.
2. drench from Old English drencan, to soak, from nasalized o-grade Germanic causative form *drankjan, "to cause to drink"
3. drown from a Scandinavian or late Old English source similar to Old Norse drukkna, to drown, from Germanic zero-grade suffixed form *drunk-nōn.
[Pokorny dhreg̑- 273.]