Definition of “buttress” - English Dictionary

“buttress” in American English

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buttressverb [ T ]

us /ˈbʌ·trəs/

art to give support to or strengthen something:

He looked for things that would buttress the prosecution case and win a conviction.

buttressnoun [ C ]

us /ˈbʌ·trəs/

a structure made of stone or brick that sticks out from and supports a wall of a building

(Definition of “buttress” from the Cambridge Academic Content Dictionary © Cambridge University Press)