n. A double-edged, leaf-shaped, typically bronze dagger formerly used in Ireland and Scotland
the GNU version of the Collaborative International Dictionary of English
n. A knife or short dagger, esp. that in use among the Highlanders of Scotland. [Variously spelt.]
The Century Dictionary and Cyclopedia
n. See skein.
n. A dagger; specifically, an ancient form of dagger found in Ireland, usually of bronze, double-edged, and more or less leafshaped, and thus distinguished from the different forms of the seax, or broad-backed knife.
Word Usage
"a knife the Scotch highlanders call a skean-dhu, sharp-pointed as a needle, sharp-edged as a razor, and with one blow of it he had cleft her heart, and she never cried or laughed any more in that body whose charms she had degraded to the vile servitude of her vanity."