sash /sæʃ/ BrE AmE noun [countable]
[ Sense 1: Date: 1500-1600 ; Language: Arabic ; Origin: shash 'fine cloth' ]
[ Sense 2: Date: 1600-1700 ; Origin: Probably from French châssis ; ⇨ ↑ chassis ]
1 . a long piece of cloth that you wear around your waist like a belt
2 . a long piece of cloth that you wear over one shoulder and across your chest