Abandon at the roadside (5)
I believe the answer is:
ditch
'abandon' is the definition.
(I know that ditch has the is a more specific form of the action abandon)
'the roadside' is the wordplay.
I cannot quite see how this works, but
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is present in the answer.
The remaining letters 'dich' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'at' is the link.
Can you help me to learn more?
(Other definitions for ditch that I've seen before include "Dump; channel" , "Gully or furrow" , "side of field?" , "Trench, dike" , "Furrow, trench" .)