Setters' pleasure trips no longer starting with a thematic dash (4)
I believe the answer is:
ours
'setters'' is the definition.
(belonging to crossword setters)
'pleasure trips no longer starting with a thematic dash' is the wordplay.
I cannot quite understand how this works, but
'no' could be 'o' (O resembles 0) and 'o' is located in the answer.
The remaining letters 'urs' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
(Other definitions for ours that I've seen before include "What we share" , "Indiscriminate slaughter" , "British" , "Relating or belonging to us" , "Belong to us both" .)