I. ri-ˈtər-nə-bəl adjective
Date: 15th century
1. : legally required to be returned, delivered, or argued at a specified time or place
a writ returnable on the date indicated
2.
a. : capable of returning or of being returned (as for reuse)
returnable beer bottles
b. : permitted to be returned
sale items are not returnable
II. noun
Date: 1963
: something designed to be returned (as for recycling) ; especially : a returnable beverage container