groove / groōv/ • n. 1. a long, narrow cut or depression, esp. one made to guide motion or receive a corresponding ridge. ∎ a spiral track cut in a phonograph record, into which the stylus fits. ∎ Climbing an indentation where two planes of rock meet at an angle of more than 120°.2. an established routine or habit: his thoughts were slipping into a familiar groove.3. inf. a rhythmic pattern in popular or jazz music: the groove laid down by the drummer and bassist is tough and funky.• v. 1. [tr.] make a groove or grooves in: deep lines grooved her face.2. [intr.] inf. dance or listen to popular or jazz music, esp. that with an insistent rhythm: they were grooving to Motown. ∎ dated play such music in an accomplished and stylish manner: the rhythm section grooves in the true Basie manner. ∎ enjoy oneself: Harley relaxed and began to groove.3. [tr.] inf. Baseball pitch (a ball) in the center of the strike zone. ∎ (in the context of other sports) kick or throw (the ball) successfully; score (a goal) with stylish ease: the San Diego kicker grooved the winning field goal.PHRASES: in (or into) the groove inf. performing consistently well or confidently: it might take me a couple of races to get back into the groove. ∎ indulging in relaxed and spontaneous enjoyment, esp. dancing: get into the groove!