n.

1. 【史】（頭盔的）面甲
2. 【英】帽舌；眼罩；遮陽板

n.

1. a movable part of a helmet that can be pulled down to cover the face.
2. a screen for protecting the eyes from unwanted light, especially one at the top of a vehicle windscreen.
3. N. Amer. a stiff peak at the front of a cap.
4. historical a mask.