Meaning of BUTTRESS in English

BUTTRESS

I. but ‧ tress 1 /ˈbʌtrəs/ BrE AmE noun [countable]

[ Date: 1300-1400 ; Language: Old French ; Origin: boterez , from boter ; ⇨ ↑ butt 2 ]

a brick or stone structure built to support a wall

II. buttress 2 BrE AmE verb [transitive] formal

to support a system, idea, argument etc, especially by providing money:

The evidence seemed to buttress their argument.

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.