- ambulatory (adj.)
- "pertaining to walking;" also "shifting, not permanent," 1620s, from Latin ambulatorius "of or pertaining to a walker; movable," from ambulator, agent noun from past participle stem of ambulare "to walk" (see amble). Middle English had ambulary "movable" (mid-15c.).
- ambulatory (n.)
- from Medieval Latin ambulatorium, from Latin ambulatorius "movable," from ambulare (see amble).
- perambulator (n.)
- 1610s, "one who perambulates," agent noun in Latin form from perambulate. Sense of "baby carriage" is first recorded 1856; often colloquially shortened to pram.