Definitions for "Defensive Bet"
A bet placed with the hope of decreasing one's potential loss.
Designed to appear strong, especially in big bet poker, in order to dissuade large raises. Disconnectors Cards too far apart to make a straight, such as T,5. Contrast connectors.
You beleive if you don't make a bet your opponent will make a higher bet in hope you will fold, therefore you make a bet in hopes the opponent will check it.