Check into Native American nursery (6)
I believe the answer is:
creche
'nursery' is the definition.
(I've seen this before)
'check into native american' is the wordplay.
'check' becomes 'ch' (abbreviation).
'into' is an insertion indicator.
'native american' becomes 'cree' (an indigenous people of North America).
'ch' going within 'cree' is 'CRECHE'.
(Other definitions for creche that I've seen before include "A day nursery for child-minding" , "Tableau of the Nativity" , "A day nursery used by working parents" , "A day care baby-minding business" , "Nursery provided for working parents" .)