noun

• (glassblowing) The button joining a glass's stem to its foot.
• (in the plural) A walk; passage.
  "Conduct my steps to find the fatal tree."
• (in the plural) A portable framework of stairs, much used indoors in reaching to a high position.
• (nautical) A framing in wood or iron which is intended to receive an upright shaft; specifically, a block of wood, or a solid platform upon the keelson, supporting the heel of the mast.

verb

• (intransitive) To move the foot in walking; to advance or recede by raising and moving one of the feet to another resting place, or by moving both feet in succession.
  "A “moving platform” scheme[…]is more technologically ambitious than maglev trains even though it relies on conventional rails. Local trains would use side-by-side rails to roll alongside intercity trains and allow passengers to switch trains by stepping through docking bays."
• (intransitive) To walk; to go on foot; especially, to walk a little distance.
  "to step to one of the neighbors"
• (intransitive) To walk slowly, gravely, or resolutely.
  "Home from his Morning-Task , the Swain retreats, His flock before him stepping to the fold."
• (intransitive, figuratively) To move mentally; to go in imagination.
  "They are stepping almost three thousand years back into the remotest antiquity."

noun

• (colloquial) A stepchild.
  "[Krazy Kat, after complimenting a woman on her nice polite little child:] Boy or girl? [Woman:] Step – but well brung up."
• (colloquial) A stepsibling.
  "So for Richard and Barbara, Jeff and Kari, the impossibly varied collection of steps and halves that is another legacy of my father."

name

• (US) Initialism of Smart Traveler Enrollment Program.