Raise Blind
To raise blind is to raise without looking at your cards. In some games, it is a bet made in the dark, before the cards are seen.
The simple explanation
A player who raises blind has not looked at his hand. He may do it to look strong or because the game has special rules.
A closer look
Blind raises are rare. They are different from the blinds in Hold'em: a blind raise is a choice made without information. Some home games allow it. It is risky, since the hand may be weak. Check the rules and etiquette of the game.
A practical example
A player raises blind without looking at his cards, in a home game that allows it.
Full explanation
To raise blind is to raise without looking at your cards. In some games, it is a bet made in the dark, before the cards are seen.
To raise blind is to raise without looking.
It is not the same as the blinds.
It is rare.
Check the rules before doing it.