A four-sided plane figure is a quadrilateral or quadrangle, sometimes also called a tetragon. It can be further classified as a rectangle or oblong, kite, rhombus, and square.

Shop at your favorite retailers with flexible payments. Download the Four app and split your purchases into four easy installments.

The meaning of FOUR is a number that is one more than three. How to use four in a sentence.

Idiom on all fours (Definition of four from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

There were four families in the camp, but most of the older warriors were back at the village seeing their girlfriends and getting their hair braided. It’s getting close to four, and we do have school in the morning.

something representing, represented by, or consisting of four units, such as a playing card with four symbols on it

1. The cardinal number equal to 3 + 1. 2. The fourth in a set or sequence. 3. Something having four parts, units, or members, such as a musical quartet or a four-cylinder engine.

WordReference Random House Learner's Dictionary of American English © 2025 four /fɔr/ n. [countable] a cardinal number, three plus one. a symbol for this number, as 4 or IV. adj. [before a …

Jan 24, 2026 · Describing a set or group with four elements. four (countable and uncountable, plural fours) (countable) The digit or figure 4; an occurrence thereof. (countable) Anything measuring four …

FOUR definition: a cardinal number, three plus one. See examples of four used in a sentence.