Look, engaging in a lot of tricks in skiing event (6)
I believe the answer is:
slalom
'skiing event' is the definition.
(I've seen this in another clue)
'look engaging in a lot of tricks' is the wordplay.
'look' becomes 'lo' (archaic exclamation meaning 'look!').
'engaging in' indicates putting letters inside (I've seen this in other clues).
'a lot of' means to remove the last letter (a lot of but not all of the word).
'tricks' becomes 'slams' (slams are made up tricks in the card game bridge).
'slams' with its final letter taken away is 'slam'.
'lo' put into 'slam' is 'SLALOM'.
'in' acts as a link.
(Other definitions for slalom that I've seen before include "Skiing obstacle race" , "Downhill skiing race" , "Winding ski-run" , "Winter Olympic event" , "Skiers' obstacle race" .)