Opening of shopping precincts for underwear (6)
I believe the answer is:
smalls
'underwear' is the definition.
(I've seen this before)
'opening of shopping precincts' is the wordplay.
'opening of' suggests taking the first letters.
'precincts' becomes 'malls'.
The first letter of 'shopping' is 's'.
's'+'malls'='SMALLS'
'for' is the link.
(Other definitions for smalls that I've seen before include "Undies" , "Diminutive undergarments?" , "Undersized underwear?" , "Slips perhaps" , "Items of a personal nature" .)