ضمة

Etymology
of the verb, from the root. When used to describe the vowel ـُ (u), means “an instance of [lip-]rounding”, since u is the only short vowel in Arabic that is pronounced with lip-rounding.

Noun

 * 1) an embracing
 * 2) a number of horses assembled from every quarter for a race
 * 3)  damma, ḍamma, the diacritic in the Arabic script that represents the vowel, appearing as a small curl placed above a letter:  ـُ

Etymology
From.

Noun

 * 1) a hug
 * 2)  damma, the diacritic in the Arabic script that represents the vowel, appearing as a small curl placed above a letter:  ـُ