definition of
tower

[1] #1 tower n. a structure taller than its diameter; can stand alone or be attached to a larger building. wn

[2] #2 tower v. [loom, predominate, hulk] appear very large or occupy a commanding position; "The huge sculpture predominates over the fountain"; "Large shadows loomed on the canyon wall". wn

[3] #3 tower n. [column, pillar] anything that approximates the shape of a column or tower; "the test tube held a column of white powder"; "a tower of dust rose above the horizon"; "a thin pillar of smoke betrayed their campsite". wn

[4] #4 tower n. [tugboat, tug, towboat] a powerful small boat designed to pull or push larger ships. wn