An oleo strut is a type of shock absorber used in aircraft landing gear. It works by compressing a gas or fluid inside a cylinder in response to impact. Some commonly used synonyms for oleo strut include shock absorber, dampener, hydraulic shock, suspension strut, and spring strut. These terms all refer to the same functionality of absorbing the forces exerted on an aircraft during landing and reducing the impact felt by passengers aboard. Essentially, an oleo strut is a key component of an aircraft's landing system and its synonyms serve to describe the effectiveness of its ability to cushion landing impact.