Definition of pb
Pb is the initials of the term "pot bet". A pot bet is when we bet the equivalent of the pot size. If we are on a flop and the pot size is 10??? and we bet 10???, we are making a pot bet. If you play online poker, usually you will see shortened buttons on your table. Usually the buttons will be 50% pot, 75% pot and pot. If you press 50% for example, the amount will automatically adjust to half the size of the pot.
Under what circumstances do we make a pot bet?
The pot bet is not the most common bet. Typically, people will bet 50% of the pot size or 75% of the pot size. Since most of the time we bet on bluffs in poker, we want to bet just enough to get the job done, but not so much that we lose too much when called. But in what situation will we make a pot bet? Usually, when we are strong and there are a lot of draws on the flop. For example, if you have a pair of kings on 8-9-Q with a flush draw, you might want to make a pot bet to make all the draws pay.