Caterer beaten in domestic row? (7)
I believe the answer is:
terrace
'domestic row?' is the definition.
(I've seen this before)
'caterer beaten' is the wordplay.
'beaten' indicates anagramming the letters (letters beaten up or destroyed).
'caterer' anagrammed gives 'TERRACE'.
'in' is the link.
(Other definitions for terrace that I've seen before include "flat roof" , "Group of non-detached houses" , "steps in stadium" , "Veranda" , "Row of houses joined together" .)