Source : Webster's Revised Unabridged Dictionary (1913)

Sachet \Sa`chet"\, n. [F., dim. of sac. See {Sac}.]
   A scent bag, or perfume cushion, to be laid among
   handkerchiefs, garments, etc., to perfume them.

Source : WordNet®

sachet
     n : a small soft bag containing perfumed powder; used to perfume
         items in a drawer or chest