عوم

عُومَةٌ ذ A certain insect (دُوَيْبَّة, S, K) that swims in the water, resembling a black فَصّ [or stone of a ring ], smooth and round: (S:) pl. عُوَمٌ. (S, K.) ― -b2- And A species of serpents, in 'Omán. (TA.)