Dell
Old English, of Germanic origin; related to Dutch del and German dialect Telle, also to dale.
wiktionary
From Middle English delle, del, from Old English dell(“small dale”), from Proto-Germanic *daljō(“a hollow, abyss”), diminutive of Proto-Germanic *dalą(“valley, dale”), from Proto-Indo-European *dʰol-, *dʰel-(“an arch, vaulting, curve, curvature, cavity”). Cognate with Dutch del(“a dell”), German Delle(“a hollow”).
Origin obscure. Originally thieves' cant. Compare Dutch del(“trollop, floozie”). This etymology is incomplete. You can help Wiktionary by elaborating on the origins of this term.
etymonline
dell (n.1)
Old English dell "dell, hollow, dale" (perhaps lost and then borrowed in Middle English from cognate Middle Dutch/Middle Low German delle), from Proto-Germanic *daljo (source also of German Delle "dent, depression," Gothic ib-dalja "slope of a mountain"); related to dale (q.v.).
dell (n.2)
rogue's cant 16c.-17c. for "a wench, a young girl of the vagrant class," 1560s, of uncertain origin.
A Dell is a yonge wenche, able for generation, and not yet knowen or broken by the vpright man. ... [W]hen they have beene lyen with all by the vpright man then they be Doxes, and no Dells. [Thomas Harman, "A Caveat or Warning for Common Cursitors," 1567]
