مَسْرَبَةٌ

2.
Also The passage, and place of exit, of the dung; (Mgh, Msb, TA;) in this sense with fet-h (Mgh, Msb) only [i. e. to the ر]; or so and likewise مَسْرُبَةٌ: and both signify the upper part of the anus. (TA.)
3.
See also the next following paragraph.
4.
Also [A sitting-place] like a صُفَّة [q. v.], before a [chamber such as is called] غُرْفَة: not مشربة; for this is a غُرْفَة [itself]. (TA.)

Perseus ID: n19470