From The Collaborative International Dictionary of English v.0.48:
Dell \Dell\, n. [AS. del, akin to E. dale; cf. D. delle, del, low ground. See Dale.] 1. A small, retired valley; a ravine. [1913 Webster]
In dells and dales, concealed from human sight. --Tickell. [1913 Webster]
2. A young woman; a wench. [Obs.] [1913 Webster]
Sweet doxies and dells. --B. Jonson. [1913 Webster]