按钮位翻牌前漂浮（彩虹牌面）（BTN Preflop Float Rainbow）
Refers to the Button BTN employing a float strategy preflop Preflop, i.e., calling preflop with the intention of attacking postflop using positional advantage, and typically on a rainbow flop three different suits to reduce opponents' drawing possibilities.
This term is a combination of several poker concepts: BTN (Button), Preflop (before the flop), Float (usually meaning calling on the flop with the intention of raising on the turn or river, but here extended to the preflop stage), and Rainbow (a board where all three flop cards are of different suits).
In standard poker terminology, a "float" typically refers to calling a bet on the flop with the plan to raise on the turn or river, often used against a continuation bet. "Preflop Float" is not a standard term, as players rarely make such a distinction for the preflop stage; however, some players might use "Preflop Float" to describe calling preflop with a weak hand, hoping to take down the pot after the flop. A Rainbow board lacks a flush draw, making it more favorable for a floating strategy because opponents have fewer draws, increasing the success rate of stealing the pot.
This combined term likely originates from advanced strategy discussions, specifically referring to the Button position calling a preflop raise (possibly with speculative hands), and then continuing the float strategy (calling or raising) when the flop comes rainbow. Due to the positional advantage of the Button, this play is more viable.
In practice, players should note that Preflop Float itself carries high risk, as calling with weak hands preflop can lead to significant losses; while a Rainbow board reduces draws, if the flop hits the opponent's top pair, they may not be willing to fold easily.
In summary, this term is not a fundamental poker vocabulary but a strategic descriptive phrase, commonly used in discussions among advanced players.