What is the name of wooden dolls that are stacked into one another.?

Question

The doll is about six dolls one stacked into the other. A perfect fit. Wood with unusual colors, decorated in some type of flowers.Red green purple possibly shlacked. Letters UTK on bottom.

Answer 1

I always thought that they were just called Russian stacking dolls.  Now I know better.

Answer 2

Ukranian nesting dolls?

Answer 3

Matryoshka dolls, pronounced kind of like Ma'TROOSH'ka.

I have several after going to CIS a decade ago :)