Definition of balaclava
The expression poker bonnet can have several meanings. One is a very large monetary loss on a single night. Another is a "downswing". A bonnet is a session that blows a hole in the bankroll.
Hooded player, pigeon, fish, noob
Another possible use of the word bonnet is to describe a hooded player. The hooded player is often a beginner, a player who does not understand the subtleties of the game. In English and even in French, he can also be called a "noob" (beginner). The hooded player often has no idea that he is the hooded player.
Many words to describe the same type of player. Poker is a complex game and winning players have many hours of study behind the tie to get to the level they are. But not everyone has the same ambitions. Some neophytes will show up at your tables without much knowledge simply to have fun betting on their luck. Although the hooded player or the fish has a bad reputation, it is still the reason why the poker economy runs. And to paraphrase a famous movie: "At a poker table, if you haven't spotted the hooded player in the first 5 minutes, the hooded player is you".