Explanation of Two-bet

Bets in poker can be assigned numbers to show where they fall within a sequence of bets.

One-bet – The first bet in a sequence
Two-bet – The first raise in a sequence
Three-bet – The first re-raise in a sequence
Four-bet – The second re-raise in a sequence
Five-bet – The third re-raise in a sequence

Note that the first open-raise preflop in Hold’em and Omaha is referred to as a “2-bet” because the mandatory blind payments are considered as the first bet of the sequence. This can cause some confusion amongst novice players. It’s common for a postflop 2bet (the first raise) to be mistakenly referred to as a “3bet”.

Example of Two-bet used in a sentence -> Our opponent fire a continuation bet on the flop and we put in the flop two-bet.

How to Use Two-bet as Part of Your Poker Strategy 

Two-bets, the first raise in a sequence, represent more strength the later the street they are on. For example, in Hold’em, turn and river two-bets should hence be given a great deal of credit in most games. 

While flop two-bets in Hold’em are still relatively strong, they are significantly more likely to be bluffs/semi-bluffs when compared to turn and river two-bets.

Preflop open-raises in Hold’em are referred to as two-bets and don’t necessary represent any real strength. The exact range represented will usually be related to the position of the open-raiser at the table.

See Also 

Open-raise, Three-bet, Four-bet, Five-bet, Raise