A family name of English/Scottish origin (surname McDonald/MacDonald).
隣のクラスにマクドナルドさんという学生がいます。
There is a student named McDonald in the class next door.
マクドナルド氏はその町の有名な医者です。
Mr. McDonald is a well-known doctor in that town.
The global fast-food chain McDonald's (often abbreviated as 'Mac' or 'Makku' in Japanese).
昼ごはんはマクドナルドでハンバーガーを買った。
I bought a hamburger at McDonald's for lunch.
子どものころは休日にマクドナルドへ行くのが楽しみだった。
As a child, I used to look forward to going to McDonald's on weekends.
日本では『マック』という呼び方もよく使われる。
In Japan, the nickname 'Makku' (Mac) is also often used.