Tanj

exclamation
Acronym of “There ain’t no justice” used as an expletive.
Source
Ringworld

Archlight

noun
As seen from the inner surface, the reflected light from the skyward face of a ringworld.
Origin
So named because the skyward face resembles an arch overhead.
Source
Ringworld

Spinward

adverb
In the direction of spin (of a rotating ringworld or orbital habitat.)
Source
Ringworld

Wirehead

noun informal
A person fitted with an electronic implant to stimulate the pleasure centres of the brain.
Source
The Ringworld Engineers

Ringworld

noun
A ring-shaped artificial habitat encircling a star.
Source
Ringworld