dumbles

Noun

dumble (plural dumbles)

1. (Midlands) A shady valley, a dingle; especially one with steep wooded sides and a stream running through it.
   • When a stream runs in a deep dell, particularly in clay districts, the steep banks and stream form what are called a “dumble” in Nottinghamshire.1859, John Blenkarn, British timber trees: a practical treatise on the raising, management, and value of British timber, G. Routledge, page 110
2. (East, Yorkshire) The club rush.
   • Recently Dr. K. J. Allison has come across a Leconfield lease of 1631 which included 'all the earl 's dumbles growing in Arram Carr' ?1974, The Local Historian - Volume 11, page 64