noun
visor; eyeshade
Refers to the brim or peak of a cap, helmet, or similar headgear that shades the eyes. Also used for standalone eyeshades.
野球帽の眉庇が日差しを遮ってくれる。
The visor of the baseball cap blocks the sunlight.
彼は眉庇のついたヘルメットをかぶっていた。
He was wearing a helmet with a visor.
Compound of 眉 (まゆ, eyebrow) and 庇 (ひさし, eaves/visor), referring to a brim that shades the eyes like eaves shade a building. The reading まびさし is a rendaku form of まゆ + ひさし.