sachet
/ˈsæʃeɪ/noun
1
- chiefly Brit. a small sealed bag or packet containing a small quantity of something〈主英〉（密封的）小袋。
2
- a small perfumed bag used to scent clothes（熏衣用的）香囊, 小香袋。
2.1
- mass noun archaic dried, scented material for use in scenting clothes〈古〉（熏衣用的）香粉, 香料。
词源
mid 19th cent. (in sense 2)： from French, 'little bag', diminutive of sac, from Latin saccus 'sack, bag'.