bloodlet

The story

1. Old English · inherited fromblōdlǣtan“to let blood, bleed”
2. Middle English · inherited fromblodleten
3. English todaybloodlet

From Middle English blodleten, from Old English blōdlǣtan (“to let blood, bleed”), equivalent to blood + let. Cognate with German Blutlassen (“bloodletting”), Icelandic blóðlátinn (“bled”, past participle).