Drive, for example, closer to treacherous grounds (5)
I believe the answer is:
dregs
'grounds' is the definition.
(synonyms)
'drive for example closer to treacherous' is the wordplay.
'drive' becomes 'dr' (abbreviation used in road names).
'for example' becomes 'e.g.' (short for 'exempli gratia', 'for example' in Latin).
'closer to' suggests the final letters (the letter which ends or closes the word).
The last letter of 'treacherous' is 's'.
'dr'+'eg'+'s'='DREGS'
(Other definitions for dregs that I've seen before include "Wine or coffee residue" , "Leftover drink, sediment" , "Settlings or deposits" , "Remnant of drink" , "Fluid remnants" .)