rule of four

proper noun

The rule of multiplying the number of outs by four to discover one's approximate chance to make one's hand on the turn or river. Compare rule of two.

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Meanings

proper noun
  1. card gamesThe rule of multiplying the number of outs by four to discover one's approximate chance to make one's hand on the turn or river. Compare rule of two.
Cite this entry
APA

rule of four. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/rule%20of%20four

MLA

“rule of four.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/rule%20of%20four. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “rule of four,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/rule%20of%20four.

Source: rule of four on Wiktionary, CC BY-SA 4.0.