Crow bar (5)
I believe the answer is:
roost
'crow bar?' is the definition.
(I've seen this in another clue)
'crow bar?' is the wordplay.
'crow' becomes 'roos' (I can't justify this - if you can you should give a lot more credence to this answer).
'bar?' becomes 't' (T-bar is a part of a ski lift).
'roos'+'t'='ROOST'
Can you help me to learn more?
(Other definitions for roost that I've seen before include "Bats' settling place" , "Bird's shelter" , "In Orkney, the current" , "Henhouse" , "Perch for a sleeping bird" .)