(philosophy) An ontological position stating that an object's persistence through time is like its extension through space.

(poker) 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.

(historical) The four traditional things targeted for destruction during China's Cultural Revolution, usually translated as old customs, old culture, old habits, and old ideas.

off-roading in a vehicle with four-wheel drive

The quadripoint at the borders of Colorado, New Mexico, Arizona and Utah, and the region surrounding it. / A type of patience card game.

(slang, historical) A drink of half ale, half porter, originally costing fourpence a quart.

plural of four by two

Having four wheels / Having a transmission that drives all four wheels.

Having four feet; quadruped.

A carriage drawn by four horses controlled by one driver; a coach-and-four. / (chiefly US) A slip knot with one end hanging in front of the other; a simple necktie.