buttresses
noun
Definitions
A brick or stone structure built against another structure to support it.
Anything that serves to support something; a prop.
A buttress-root.
A feature jutting prominently out from a mountain or rock; a crag, a bluff.
verb
Definitions
To support something physically with, or as if with, a prop or buttress.
(by extension) To support something or someone by supplying evidence; to corroborate or substantiate.