sgian dubh

noun1

1. •
   (Scotland) A small, single-edged knife worn tucked into the hose (stocking) as part of traditional Scottish Highland dress along with the kilt.

   • Give me my skene-dhu, and let me go on my road. I should have been half way to Stirling brig by this time—Give me my dirk, and let me go. — 1827