Remnants of bus wreckage on the street (5)
I believe the answer is:
stubs
'remnants' is the definition.
The answer and definition can be both man-made objects as well as being plural nouns.
Perhaps you can see an association between them that I can't see?
'bus wreckage on the street' is the wordplay.
'wreckage' is an anagram indicator (I've seen this in other clues).
'on' means one lot of letters goes inside another (as in clothing 'on' a person).
'the street' becomes 'st' (abbreviation).
'bus' is an anagram of 'ubs'.
'ubs' enclosing 'st' is 'STUBS'.
'of' is the link.
Can you help me to learn more?
(Other definitions for stubs that I've seen before include "Butts" , "residual pieces" .)