Arrive with cycle at college (4,2)
I believe the answer is:
turn up
'arrive' is the definition.
(thesaurus)
'with cycle at college' is the wordplay.
'with' means one lot of letters go next to another.
'cycle' becomes 'turn' (I can't justify this - if you can you should believe this answer much more).
'at college' becomes 'up'.
'turn' put next to 'up' is 'TURN-UP'.
Can you help me to learn more?
(Other definitions for turn up that I've seen before include "surprise" , "make louder" , "Appear by chance - increase volume" , "Arrive (uninvited?)" , "Show" .)