The Proto-Turkic word *ič-
Word *ič-
Meaning to drink

Comments
S. A. Starostin, A. V. Dybo, O. A. Mudrak - An Etymological Dictionary of Altaic Languages, 2003, Brill

Other words that might be of interest
*emig, emček ‘breast, nipple, to suck’, *(i)aĺ(a-) ‘meal, food, to eat, to feed, porridge’, *jē- ‘to eat’, *kagur- ‘to roast, fry’, *et ‘meat’, *sag- ‘to milk’, *sǖt ‘milk’, *sōr- ‘to suck’