Also means
prop
Usage Note
Appui refers to both physical support (a ledge, a prop) and figurative backing (political or moral support). The phrase prendre appui sur means 'to lean on' or 'to rely on'. The final '-i' is pronounced; the phrase point d'appui ('fulcrum' or 'base of support') appears in both everyday and military language.
Examples
"Il a besoin de l'appui de ses amis."
Natural Translation
He needs the support of his friends.

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