Bedeutung von “passer-by” — Learner’s Dictionary

passer-by

noun [ C ] us uk /ˌpɑːsəˈbaɪ/ plural passers-by

someone who is walking past something by chance:

Police were alerted by a passer-by who saw the accident.

(Definition von “passer-by” aus dem Cambridge Learner's Dictionary © Cambridge University Press)