PENNANT

[noun] [C] - a triangular-shaped flag, several of which can be used in a line for decoration or to send a messageThe team pennant has an eagle emblem on it.There was a pennant fluttering at the top of the mast.In baseball, the pennant is the flag which is the symbol showing that a team has that year won in the group of teams in which it plays.the American League pennant racethe National League pennant winnersDivisional winners meet in the final to decide the pennant.