Caddy/ˈkædi/ Definition 1 of 3Pro Tip 1/3Variety of Uses A caddy can carry different household objects, not just tea or sugar. I bought a desk caddy to organize my pens and notepads. Pro Tip 2/3Portable Storage Caddies are designed to be easy to move from place to place. She used a craft caddy to bring her painting supplies to class. Pro Tip 3/3Often With Compartments Caddies may have sections for organizing items efficiently. The tool caddy had separate compartments for nails and screws.