Yes, step is a Scrabble word!

Verb

1. Shift or move by taking a step

2. Put down or press the foot, place the foot

3. Cause (a computer) to execute a single command

4. Treat badly

5. Furnish with steps

6. Move with one's feet in a specific manner

7. Walk a short distance to a specified place or in a specified manner

8. Place (a ship's mast) in its step

9. Measure (distances) by pacing

10. Move or proceed as if by steps into a new situation

Noun

1. Any maneuver made as part of progress toward a goal

2. The distance covered by a step

3. The act of changing location by raising the foot and setting it down

4. Support consisting of a place to rest the foot while ascending or descending a stairway

5. Relative position in a graded series

6. A short distance

7. The sound of a step of someone walking

8. A musical interval of two semitones

9. A mark of a foot or shoe on a surface

10. A solid block joined to the beams in which the heel of a ship's mast or capstan is fixed

11. A sequence of foot movements that make up a particular dance