pöial

Etymology 1
From. The phonological development of this word is somewhat irregular: *peikälo → *peigäl (changes to an e-stem noun) → *pëigal (backing of *-e- after the knowledge of the original *-ä- ' s existence lost) → *põial (intermediate form) → pöial, but also the original weak grade consonant was changed from -g- to -d-.

Noun

 * 1) thumb