Definition of "step out"

step out

verb
third-person singular simple present steps out, present participle stepping out, simple past and past participle stepped out
1. (transitive) To exit a place on foot, often for a short time.
2. (intransitive, idiomatic) To date, to be in a romantic relationship.
3. (military) To increase the length, but not the rapidity, of the step.
  Quotations
  […] they had marched past Poincaré at Peterhof, the Grand Duke Nikolai Nikolaevich stepping it out on the right flank with his perfect martial bearing and an air of desperate bravery about him, saluting and giving this honored guest eyes right.
  1989, H[arry] T[aylor], transl. Willetts, August 1914, Farrar, Straus and Giroux, translation of original by Aleksandr Solzhenitsyn, page 225