kitten's in Polish:

1. kotek

Polish word "kitten's"(kotek) occurs in sets:

Fiszki z książki - "Raggedy Ann Stories" (Johnny G...
Fiszki z książki - "Dorothy and the Wizard in Oz" ...
Fiszki z książki - "Uncle Wiggily's Fortune" (Howa...
Fiszki z książki - "Five Little Friends" (Sherred ...
Fiszki z książki - "The Bobbsey Twins at the Seash...