A chubby high-spirited child (6)

I believe the answer is:

cherub

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'child' is the definition.
(I know that cherub is a type of baby)

I cannot understand how the rest of the clue works.

(Other definitions for cherub that I've seen before include "Sweet little baby" , "High-ranking angel" , "Sweet innocent baby" , "A heavenly winged child" , "Lovely child" .)

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

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