noun
Used in restaurant contexts for a small dish ordered alongside the main course.
ランチにサイドメニューでサラダを頼んだ。
I ordered a salad as a side dish with lunch.
noun
side menu; sidebar menu
Computing term for a secondary navigation menu, often a vertical bar on a website or app.
このサイトのサイドメニューから設定を変更できます。
You can change settings from the side menu of this site.