ambulator
/ˌæmbjʊˈleɪtər/Definitions
1. noun
a person who carries or leads another, especially a blind person, as a guide.
“The ambulator led his blind friend through the crowded streets.”
2. noun
a person who walks or tours on foot, especially for pleasure or exercise.
“As an ambulator, John enjoyed exploring the city on foot.”
3. noun
a part of a machine or a mechanism that moves or oscillates, especially one that has a reciprocating motion.
“The ambulator of the engine was damaged in the crash.”