QUIPU - is a valid Scrabble word.
Definition of QUIPU:
- a device made of a main cord with smaller varicolored cords attached and knotted and used by the ancient Peruvians (as for calculating)
- a device to help memory, also QUIPO, QUIPPU [n -S]
- device consisting of a cord with knotted strings of various colors attached, used by the ancient Peruvians for recording events, keeping accounts, etc.