Definition of hero call
A hero call is when you make a really tough call. A hero call is when you call on the river with a weak hand and win on the showdown. A hero call is when your opponent can have a failed draw that you beat. To make a good hero call, you need to have a good read on your opponent. Hero calls can be similar to crying calls, calls that you make when you are not sure of the outcome.
An example of a hero call
You are in UTG position with a pair of 9s in your hand. You open to 3 big blinds and an aggressive player 3-bets you on the button. You call his 3bet while out of position. The flop comes 2-J-T with a flush draw. Your opponent bets after your check and you call the bet. The turn is another J and your opponent bets again after you check. You call the bet. The river brings a 3 that does not complete the flush draw. You pass and your opponent pushes all in. Here, your opponent may have several failed draws, including a flush draw. If he is aggressive, he may also bluff with KQ or AK or AQ. You call the bet (hero call) and he shows you AK with the flush draw. Excellent hero call!