dun

A color or pigment varying around a light grey-brown color.

“she wore dun”

Horse of a dull brownish grey color.

Treat cruelly.

Cure by salting.

“dun codfish”

Make a dun color.

Persistently ask for overdue payment.

“The grocer dunned his customers every day by telephone”

Of a dull greyish brown to brownish grey color.

“the dun and dreary prairie”