The term 'Sight Blocker' can be summarized as a HAZE, which is a four letter word. HAZE is an atmospheric phenomenon caused by the presence of suspended particles such as dust, smoke, or other pollutants in the air. It reduces visibility and can cause difficulty in breathing. HAZE can also be caused by natural events such as volcanic eruptions, forest fires, and sandstorms. HAZE is often used to describe a situation where visibility is reduced due to a combination of factors, including weather, pollution, and smoke.