IPA: /ˈækrəˌfoʊb/
KK: /ˈækrəˌfoʊb/
A person who has an intense fear of high places.
As an acrophobe, she felt anxious when standing on the balcony of the tall building.
Acrophobe is formed from "acro-" (from Greek "akron", meaning top or height) and "phobia" (from Greek "phobos", meaning fear). The word describes a person who has a fear of heights.
Imagine someone who has a fear of being at the 'top' ('acro-') of a tall place — that's why an acrophobe is someone afraid of heights.