1) A protective or disguising cover for the face, often enveloping the entire head.
2) A Penalty in football
where the front part of a player's helmet is used to throw another player to the ground.
3) A mask made by the flesh of your murder victim's face.
1) They robbed our bank but they wore facemasks. We don't know who they are.
2) Yeah that was an unintentional facemask. Only five yards lost.
3) Oh shit! Did you see Otis wearing that facemask in Devil's Rejects