Where does “пощупать” come from?

пощупать (Russian) comes from Russian по́-, from Russian -бира́ть.

пощупать (Russian): to feel, to touch; to grope; to probe

Definitions

Step	Language	Word	Meaning
1	Russian	по́-	—
2	Russian	-бира́ть	—

пощупать — Etymology, Origin & Word History | Etymology Explorer