dumble means A shady valley, a dingle; especially one with steep wooded sides and a stream running through it. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Why “dumble” is a great word
DUMBLE — [Noun] A shady valley or dingle, typically one with steep, wooded sides and a stream. It is a probable variant of 'dimble', a Middle English word for a hollow or dell. Unlike a "dale," which opens to wide skies and pasture, or a "gorge," which is carved from stark, dramatic rock, a dumble is a secretive, green sanctuary of perpetual dusk. It is the damp, leaf-muffled quiet where a hidden brook slips over mossy stones; the cool gloom under a canopy of ancient beech and oak; the feeling of being gently swallowed by the earth itself—a hidden pocket of the world, a geography of quiet surrender.
noun
- 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.”
- 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' ?”