Something for a baby, a little poem? (7)
I believe the answer is:
layette
'something for a baby' is the definition.
(a layette is a set of clothing for a baby)
I don't understand how the remainder of the clue works.
(Other definitions for layette that I've seen before include "Set of clothes for new baby" , "First clothes" , "Complete set of clothing for a baby" , "baby needs this" , "Complete set of baby clothes" .)