[th oo, doo]
a small knife tucked into or worn against the top of a stocking in the full dress of Highland Scottish males.
Also skene dhu.
Origin of skean dhu
First recorded in 1810–20, skean dhu is from the Scots Gaelic word sgian dhubh literally, black skean
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019