supertower means A very tall building. Lexicurio rates it Rare gem — a strength score of 79 out of 100.
Etymology
From super- + tower.
noun
- A very tall building.“A developer has already bought three other small adjoining buildings on the block and plans to demolish them to erect New York City’s latest opulent supertower: It would soar over 900 feet, some 80 stories, above the street in what the developer calls “Manhattan’s quintessential luxury neighborhood.””