Check permit for memorial (6)
I believe the answer is:
tablet
'memorial' is the definition.
(thesaurus)
'check permit' is the wordplay.
'check' becomes 'tab' ('tab' can be a synonym of 'check').
'permit' becomes 'let' ('let' can be a synonym of 'permit').
'tab'+'let'='TABLET'
'for' acts as a link.
(Other definitions for tablet that I've seen before include "Pill; writing pad" , "Stone slab; pill" , "Small pill or lozenge" , "Pill; computer" , "Flat slab (of stone, etc)" .)