source: By Benjamin West - http://www.nccsc.net/archives/poetry/poems/treaty-paris-1783, Public Domain

noun (plural treaties)

a formally concluded and ratified agreement between countries.

«国家などとの/…に関する» 条約, 協定, 協約; 条約協定文書 «with/on» (→ convention)

late Middle English: from Old French traite, from Latin tractatus ‘treatise’ (see tractate).