"tower" in the noun sense
a structure taller than its diameter can stand alone or be attached to a larger building
2. column, tower, 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"
3. tugboat, tug, towboat, tower
a powerful small boat designed to pull or push larger ships
"tower" in the verb sense
1. loom, tower, predominate, hulk
appear very large or occupy a commanding position
"The huge sculpture predominates over the fountain"
"Large shadows loomed on the canyon wall"
Source: WordNet® (An amazing lexical database of English)
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