Spoil

Spoils are items in, which are stored in the Spoils Bag.

Location and Uses
Spoils are occasionally dropped by some enemies when defeated. A defeated enemy may also leave behind a Treasure Sphere, which encases several Spoils. They can also be stolen from enemies by using the Grappling Hook or found inside chests. Spoils can be sold at any Beedle's Shop Ship.

Etymology
See here for the translation of each individual Spoil.