4 entries under this word
[A-S. dunn, W. dwn, Ir. & Gael. donn.] 1. Of a dark color; of a color partaking of a brown and black; of a dull-brown color; swarthy. “Dun wreaths of distant smoke.” W. Scott. Summer’s dun cloud comes thundering up. Pierpont. 2. Dark; gloomy; obscure. “In the dun air sublime.” Milton.
v. t. To cure, as cod-fish, in a manner to give them a dun color. This is effected by laying them in a pile, after salting, in a dark apartment, covered with salt grass, or some like substance. In two or three months they are opened, and then piled again in a compact mass for two or three months longer, when they are fit for use. [U. S.]
[imp. & p. p. DUNNED (dŭnd); p. pr. & vb. n. DUNNING.] [A-S. dyne, Icel. dyn, duna, din, noise, thunder, A-S. dynian, Icel. dynia, to make a din, to clamor.] To ask or beset, as a debtor, for payment; to urge importunately. “Hath she sent so soon to dun?” Swift.
Sense 1. One who duns. “To be pulled by the sleeve by some rascally dun.” Arbuthnot.
Sense 2. An urgent request or demand of payment; as, he sent his debtor a dun.
Sense 3. An eminence or mound. See DUNE.