sachet
Concise Oxford English Dictionary © 2008 Oxford University Press:
sachet /ˈsaʃeɪ/
▶noun Brit. a small sealed bag or packet containing a small quantity of something.
– origin C19: from Fr., ‘little bag’, dimin. of sac, from L. saccus ‘sack, bag’.
'sachet' also found in these Oxford entries:

