A combination of
grit and passion, especially in
baseball. Characterized by performing well in stressful,
clutch situations.
"As for this game, the Mets' ... defense tried to give the game away at the end but they just had too much collective
grit and passion -- grission, I call it -- to let this
one slip through their leaden hands."
From "Amazin' Avenue", May 6, 2009.