十じゅっ徳とくナイフ

noun

multipurpose knife; Swiss Army knife

Refers to a folding knife with multiple tools, often modeled after the Swiss Army knife. 十徳 literally means 'ten virtues' or 'ten functions'.

• キャンプには十じゅっ徳とくナイフを持もっていくと便べん利りだ。

  It's handy to bring a Swiss Army knife when camping.

• 彼かれは十じゅっ徳とくナイフで缶かんを開あけた。

  He opened the can with a multipurpose knife.