13 across
Prior
to
game
of
cards,
a
cut
(7)
Prior to game of cards, a cut (7)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
The definition is cut — to shorten. Then the wordplay is straightforward: you've got a sitting prior to bridge (the card game), and A + BRIDGE gives you your answer.