Synonyms and related words :
back door, back road, back street, back way, bolt-hole, by-lane, bypass, bypath, byroad, bystreet, byway, companion, companionway, covert way, detour, escalier, escalier derobe, escape hatch, escape route, fire escape, flight of steps, incline, landing, landing stage, perron, ramp, roundabout way, secret exit, secret passage, secret staircase, side door, side road, side street, spiral staircase, staircase, stairs, stairway, stepping-stones, steps, stile, treads and risers, underground, underground railroad, underground route