| Watchtower (n.) A tower in which a sentinel is placed to watch for enemies, the approach of danger, or the like. Thesaurus Entries Texas tower, beacon, belvedere, bench mark, bleachers, bookmark, bridge, cairn, catstone, conning tower, gallery, gazebo, grandstand, landmark, lighthouse, lightship, lookout, loophole, mark, marker, menhir, milepost, milestone, monument, observation post, observatory, outlook, overlook, peanut gallery, peephole, pharos, platform, ringside, ringside seat, seamark, sighthole, top gallery, tower |