Some drab roads on the Continent! (6)
I believe the answer is:
abroad
'on the continent' is the definition.
(I've seen this before)
'some drab roads' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'ABROAD' is hidden within 'drab roads'.
(Other definitions for abroad that I've seen before include "At large; widely current" , "in France, say" , "At large - overseas" , "Pole would be so" , "In a foreign country" .)