1. a person who solves or competes in solving Rubik's cubes or similar puzzles
Usage: informal; modern usage
2. a device or tool used to cut food into cube-shaped pieces

Examples

• She is a competitive cuber who has won several speedcubing tournaments.
• The cuber solved the Rubik's cube in under 10 seconds.
• He uses a vegetable cuber to prepare potatoes for the stew.
• Many young cubers practice daily to improve their solving times.
• The kitchen gadget includes a cuber for dicing cheese and butter.