watchtower Definition

tower, guardhouse, sentry, lighthouse, hilltop, outpost, gatehouse, rampart, fortress, pagoda, turret, stockade, doorway, ziggurat, minaret, gothic arch, temple, entranceway, blockhouse, rooftop, cupola, gun emplacement, battlements, hillock, fire tower, promontory, sentry duty, hut, fort, pillbox, slit trench, fortifications, pillboxes, guardroom, barbed wire, palisade, watchmen, courtyard, belvedere, torii, campanile, crenellations, barricade, warder, grotto, bulldozer, broch, acropolis, dolmen, fireguard, hermitage, knoll, fence, airfield, menhir, porthole, archway, castle, cliffs, airstrip, lookouts, rimrock, monument, treehouse, stupa, citadel, bell tower, cowshed, panopticon, flagstaff, shatterproof glass, barracks, palings, iconostasis, periscope, terrace, obelisk, cypress tree, ratlines, doorpost, monastery, lochan, verandah, tamarind tree, shack, theodolite, encampment, porticoes, fortresses, trespassers, checkpoint, hatchway, signboard, hillfort, chainlink fence, eyrie, ridge, headland, sukkah, hillside,