Stop-go manoeuvre in snow (4,4)
I believe the answer is:
stem turn
'manoeuvre in snow' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'stop-go' is the wordplay.
'stop' becomes 'stem' (stemming is a kind of stopping).
'go' becomes 'turn' (synonyms).
'stem'+'turn'='STEM TURN'
Can you help me to learn more?
(Other definitions for stem turn that I've seen before include "alpine move?" , "manoeuvre on skis" .)