Pushchair getting wave at end of street (8)
I believe the answer is:
stroller
'pushchair' is the definition.
(synonyms)
'wave at end of street' is the wordplay.
'wave' becomes 'roller' (roller is a kind of wave).
'at end of' means one lot of letters go next to another.
'street' becomes 'st'.
'roller' put after 'st' is 'STROLLER'.
'getting' is the link.
(Other definitions for stroller that I've seen before include "One taking constitutional" , "Pushchair in US" , "baby carriage" , "Walker" , "One wandering about" .)