ضم

ضَمُومٌ ذ Any valley along which one goes between two long hills of the kind termed أَكَمَة: or any valley flowing [ with water ] between two long hills of that kind: (so accord. to different copies of the K:) [the former explanation is app. the right; for] AHn says, when one goes along a valley between two long hills of the kind termed أَكَمَة, that places is termed الضَّمُوم. (TA.)