This is the 12840th most frequent Russian word.
куриной
"Куриной" means "chicken" or "related to chicken."
The word 'куриной' is used here as an adjective describing the type of breast (грудки), indicating that it comes from a chicken.
Я приготовил суп из куриной грудки.
I cooked a soup from a chicken breast.
In this sentence, 'куриной' modifies 'шашлык' (kebab), specifying it is made from chicken.
На ужин был куриной шашлык.
For dinner, there was chicken kebab.
Here, 'куриной' is an adjective linked with 'бульон', describing that the broth is chicken-based.