Room for children to play (7)

I believe the answer is:

nursery

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'room for children' is the definition.
(I've seen this before)

I don't understand the rest of the clue.

(Other definitions for nursery that I've seen before include "growing place" , "Establishment for plant cultivation" , "Growing environment for plants or children" , "Where young plants grow up?" , "Garden shop; child's room" .)

I've seen this clue in The Globe and Mail.

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