1. dull or uncool

2. a dull or uncool person

3. a conventional cigarette

4. to work out one's problems with someone
That square has no idea what he He is saying.
by Light Joker November 05, 2006
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Opposite of groovy. Unlike a round, long-playing vinyl record which has one playable groove on each side, a square record would not track a tone arm and cannot be played. There is no music and no soul in a square record. Something or something square just isn't with it, and lacks fun and liveliness.
Man, you don't dig this music? You are like really square.
by urbanzson July 24, 2009
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Very conservative, old fashioned, extremely conforming, not rebellious or supporting a counterculture or rebelling the counterculture in an extreme way
Whitney Houston has pretty square sounding music
by Kyle 230 October 04, 2010
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