Student accommodated by alien gets cramp (8)
I believe the answer is:
Here is my best explanation:
'cramp' is the definition.
'student accommodated by alien' is the subsidiary indication.
'student' becomes 'l'.
'accommodated by' is an insertion indicator.
'alien' becomes 'strange' ('strange' can be a synonym of 'alien').
'l' inserted inside 'strange' is 'strangle'.
'gets' is the link.
(Other definitions for strangle that I've seen before include "cut off supply of air", "Finish off", "Kill by throttling", "Smother", "suppress", "kill", "Choke to death", "throttle or choke", "Throttle" and "Suppress (an impulse)".)