khi·pu or qui·pu 
(kēp)
(kēp)n. pl. khipu or khi·pus or quipu or qui·pus
A record-keeping device of the Inca Empire consisting of a series of variously colored strings attached to a base rope and knotted so as to encode information, used especially for accounting purposes.
[Quechua khipu, knot.]
- double-handed
- doublehanded
- double-handedly
- double-header
- doubleheader
- double helix
- double-hung window
- double indemnity
- double jeopardy
- double-jointed
- double knit
- double-knit
- double negative
- doubleness
- double-park
- double-parker
- double play
- double pneumonia
- double possessive
- double-quick
- doubler
- double reed
- double-reed
- double refraction
- double replacement