Shot that might be seen in frame during Christmas season (5)
I believe the answer is:
masse
'shot that might be seen in frame' is the definition.
(type of snooker shot - a frame is a snooker game)
'during christmas season' is the wordplay.
'during' indicates a hidden word.
'MASSE' can be found hidden inside 'christmas season'.
(Other definitions for masse that I've seen before include "'En ..., all together (5)'" , "Swerve shot at billiards" , "Swerving snooker stroke" .)