тиш-
Southern Altai
Etymology
Ultimately from Proto-Turkic *sīĺ(č)- (“to swell”).
Verb
тиш- • (tiš-)
- to swell
Reference
Räsänen, Martti (1969) Versuch eines etymologischen Wörterbuchs der Türksprachen (in German), Helsinki: Suomalais-ugrilainen seura, page 424