W: (n) Britain [Related to: ring road, ringway] (a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom)
S: (n) bypass (a surgically created shunt (usually around a damaged part))
S: (n) shunt, electrical shunt, bypass (a conductor having low resistance in parallel with another device to divert a fraction of the current)