suru verb (special), transitive verb
Formal or literary term for creating a written work, such as a poem, essay, or book. Often used in elevated or academic contexts.
彼は若い頃に多くの詩を物した。
He composed many poems in his youth.
この随筆は、著者が晩年に物したものだ。
This essay is something the author wrote in his later years.