a long, narrow cut or depression in a hard material

an established routine or habit

his thoughts were slipping into a familiar groove

a particular rhythm in popular or jazz music

her vocals drift delicately across a soaring soul groove

make a groove or grooves in

deep lines grooved her face

dance or listen to popular or jazz music

they were grooving to Motown

pitch (a ball) in the centre of the strike zone

he grooved a fastball in the 9th inning