recumbent

adj

1. Lying down.
2. Inactive; idle.

noun

1. A bicycle or tricycle that places the rider in a reclined posture.
2. A large rectangular monolith lying on its side, typically flanked by two large upright stones, the flankers; found in recumbent stone circles of Aberdeenshire, Scotland, and the counties of Cork and Kerry in south-west of Ireland.