1. Movement achieved by lifting one foot and replacing it slightly ahead of its original position and this is repeated with the other foot and done in a continuous process so the user can make progress: "During his rehabilitation session, he was able to move one step at a time across the room."
2. The height or elevation of one stair: "The first step on the staircase was wide but it was very shallow."
3. A short or abbreviated distance: "It is just a step or two from my house to the corner store."
4. A process that occurs as one of a series of actions: "We took the first step in planning our vacation by calling the travel agent to get things ready."

To press down on something using one's foot: "When he approached the corner, the driver had to step on the brake to slow the bus down."

A vast semiarid grass-covered plain, as found in southeast Europe, Siberia, and central North America: "The buffalo graze on the steppe in Alberta, Canada, where they live on a protected reservation."