What does STEP mean?

noun

1. any maneuver made as part of progress toward a goal“the situation called for strong measures”
2. the distance covered by a step“he stepped off ten paces from the old tree and began to dig”
3. the act of changing location by raising the foot and setting it down“he walked with unsteady steps”
4. support consisting of a place to rest the foot while ascending or descending a stairway“he paused on the bottom step”
5. relative position in a graded series“always a step behind”
6. a short distance“it's only a step to the drugstore”
7. the sound of a step of someone walking“he heard footsteps on the porch”
8. a musical interval of two semitones