دُسْمَةٌ

A thing with which a hole in a skin for water or milk is stopped up. (M, K.)

Blackness; (IAar, TA;) [and] so دَيْسَمٌ: (K:) or dust-colour inclining to blackness. (M, K.) Hence the Abyssinian is called أَبُو دُسْمَةٍ. (IAar, TA.) See also أُمُّ دَسْمَة, above.

Applied to a man, (assumed tropical:) Low, or ignoble; base; vile; mean, or sordid: (S, TA:) or bad, corrupt, base, or vile. (M, K. [Freytag erroneously assigns the meaning “ vilis ” to أَدْسَمُ.]) One says, مَا أَنْتَ إِلَّا دُسْمَةٌ (tropical:) Thou art none other than one in whom is no good. (TA.)