Wiktionary
n. 1 (context UK dialectal English) A dale with a stream 2 (context slang English) A stupid person.
Wikipedia
Dumble is a dialect word meaning a wooded valley.
Dumble is a dialect word mainly (but not exclusively) confined to the north and east Midlands both as a place-name element and as a lexical item. It seems to contain the Old English dumbel or dymbel, 'hollow; wooded valley; deep cut water course'. The English Dialect Dictionary finds the word in Cheshire, Derbyshire, Nottinghamshire, Leicestershire, Warwickshire (where 'doomble' is also found) and in Shropshire, with the meaning of a wooded valley, a belt of trees along the bed of a small stream; a ravine through which a watercourse runs; sometimes the word appears in the plural.
There are fine examples close to Lambley and to the south of Southwell both in Nottinghamshire where the clay bedrock plateau made up of Mercia Mudstone is dissected by a number of streams, forming steep sided, wooded valleys. This gives a pleasing undulating landscape, locally known as 'The Dumbles'. These areas provide a habitat for Bluebell, yellow archangel, ramsons, dog’s mercury and sweet woodruff. To the southwest of Southwell there are two dumbles, Halloughton Dumble and Westhorpe Dumble, streams sufficiently large to be labelled Dumble on the 50,000:1 and 25,000:1 Ordnance Survey maps.
Usage examples of "dumble".
William woke up and turned over and went to sleep again and dreamed about being on a desert island with packs of Wurzel Dogs, and flocks of Boomalong Birds, and a pond full of Dumble Ducks.
Thursday morning, the undercoating having dried on the Dumble Ducks, they were being decked out in green and bronze metallic paint, with exciting touches of red and blue, and yellow bills.
Thursday morning, the undercoating having dried on the Dumble Ducks, they were being decked out in green and bronze metallic paint, with exciting touches of red and blue, and yellow bills.
Fine electric activity in sound came from the dumbles below the road, the birds piping one against the other, and water mysteriously plashing, issuing from the lake.