The story
- Scottish Gaelic · borrowed fromdranndan
- Scots · borrowed fromdrant
- English todaydrant
From Scots drant, draunt (“droning or drawling tone”), borrowed from Scottish Gaelic dranndan, draundan (“hum, buzzing, complaint, growl, snarl”), akin to Irish drantán (“hum, buzzing, growl”).
Etymology from Wiktionary, CC BY-SA 4.0.