noun
ambitious undertaking; grand scheme
Refers to a large-scale, bold plan or project. Somewhat literary and not an everyday word; often used in written or formal contexts.
彼は若い頃から壮図を抱いていた。
He had harbored an ambitious undertaking since his youth.
その計画はまさに国家的な壮図と言える。
That plan can truly be called a grand national scheme.