Word Study
back stairs
CIDE DICTIONARY
back stairs, n.
Stairs in the back part of a house, as distinguished from the front stairs ; a second staircase at the rear of a building; hence, a private or indirect way. [1913 Webster]
THESAURUS
back stairs
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 routeROGET THESAURUS
back stairs
Ambush
N ambush, camouflage, mimicry, hiding place, secret place, secret drawer, recess, hold, holes and corners, closet, crypt, adytum, abditory, oubliette, ambush, ambuscade, stalking horse, lurking hole, lurking place, secret path, back stairs, retreat, screen, cover, shade, blinker, veil, curtain, blind, cloak, cloud, mask, visor, vizor, disguise, masquerade dress, domino, pitfall, trap, camouflaged, hidden, concealed, aux aguets.For further exploring for "back stairs" in Webster Dictionary Online