noun
Mitsukoshi (surname)
Family name. Not a common word; primarily a proper noun.
三越さんは私の隣人です。
Mr./Ms. Mitsukoshi is my neighbor.
noun
Mitsukoshi (department store)
Well-known Japanese department store chain. Often used in the compound 三越伊勢丹 (Mitsukoshi Isetan) after the merger.
三越で買い物をしました。
I shopped at Mitsukoshi.