Reuse/ˌriːˈjuːz/ Definition 1 of 3Pro Tip 1/3Environmental Context Often linked with sustainability, implies reducing waste by using items multiple times. Schools teach how to reuse paper to save trees. Pro Tip 2/3Cost Effective Indicates saving money by not buying new items when old ones can be used again. Reuse jars for storage to cut costs. Pro Tip 3/3Creative Process Using items in new, imaginative ways beyond their original purpose. She found ways to reuse old tires as planters.