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English definition of “buttress”

buttress

noun [C] uk   /ˈbʌt.rəs/ us  
a structure made of stone or brick that sticks out from and supports a wall of a building

buttress

verb [T] uk   /ˈbʌt.rəs/ us  
to build buttresses to support a building or structure: It was decided to buttress the crumbling walls. to make support for an idea or argument stronger by providing a good reason for it: The arguments for change are buttressed by events elsewhere.
(Definition of buttress from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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