Game in which big caber is tossed (8)
I believe the answer is:
cribbage
'game' is the definition.
(cribbage is a kind of game)
'big caber is tossed' is the wordplay.
'is tossed' is an anagram indicator.
'big'+'caber'='bigcaber'
'bigcaber' anagrammed gives 'CRIBBAGE'.
'in which' acts as a link.
(Other definitions for cribbage that I've seen before include "Card game scored with pegs" , "SPORT/GAME" , "Card-game" , "Card game with a winning score of 121" , "Card game for two to four players" .)