Try to move along (9)
I believe the answer is:
touchdown
'try' is the definition.
(I've seen this before)
'move along' is the wordplay.
'move' becomes 'touch' (touching is a kind of moving).
'along' becomes 'down' (synonyms).
'touch'+'down'='TOUCHDOWN'
'to' acts as a link.
(Other definitions for touchdown that I've seen before include "land" , "Arrival" , "Come back to earth" , "A score of six points in American football" , "at end of flight" .)