This is the 2463rd most frequent Polish word.
dziecięcego
"Dziecięcego" means "child's" or "children's" in English, relating to or associated with children.
Here, 'dziecięcego' is used as an adjective modifying 'rozwoju', indicating that the development pertains to children.
Odwiedziliśmy centrum dziecięcego rozwoju, gdzie dzieci uczą się i bawią.
We visited the child development center where children learn and play.
In this context, 'dziecięcego' qualifies 'obuwia', specifying the type of shoes as being intended for children.
W sklepie znaleźliśmy wiele różnych dziecięcego obuwia.
In the store, we found many different children's shoes.
Here, 'dziecięcego' modifies 'czytania', signifying the reading section designed for children.