stair-step

stair-step (third-person singular simple present stair-steps, present participle stair-stepping, simple past and past participle stair-stepped)

1. To walk up a set of stairs as exercise.
2. A strategy for big city walking to avoid staying on the same street; it involves turning at a corner, walking to the end of the block, crossing the street, then repeating

   I'm going to stair-step from East 3rd and 50th down to West 44th and Seventh Avenue.

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