Rest during ski practice (3)
I believe the answer is:
kip
'rest' is the definition.
(kipping is a kind of resting)
'during ski practice' is the wordplay.
'during' indicates a hidden word.
'KIP' is hidden in the letters of 'ski practice'.
(Other definitions for kip that I've seen before include "Sleep (sl.)" , "Slumber" , "Short sleep" , "Snooze" , "Sleep, nap (colloq.)" .)