Tower  —n. 1 tall structure, often part of a church, castle, etc. 2 fortress etc. With a tower. 3 tall structure housing machinery etc. (cooling tower; control tower). —v. 1 (usu. Foll. By above, up) reach or be high or above; be superior. 2 (as towering adj.) A high, lofty (towering intellect). B violent (towering rage). [greek turris]