The story
- Old Irish · derived fromdessel“sunwise”
- Scottish Gaelic · derived fromdeiseil
- English todaydeasil
From 1771, from Scottish Gaelic deiseil, deiseal (“southward, sunward; clockwise”) (adjective and adverb), from Old Irish dessel (“sunwise”), from dess (“right, south”) and sel (“turn”).
Etymology from Wiktionary, CC BY-SA 4.0.