hi, teachers
"It may have succeeded in putting, on average, five plastic bricks into the homes of each and every one of us on the planet, but it was also trying to be all things to all comers by moving away from products that exemplified the creative, open-ended imaginative
play on which it cut its teeth. "
I don't understand the meaning of this sentence.
I want to know is the word "PLAY" here used as a noun? or PLAY ON is a phrase?
thanks
