أُسْطُبَّةٌ [an arabicized word, app. from the Greek ςύππη or ςύπη,] Tow; i. e. what falls from flax in the process of combing. (Ḳ. [See also art. صطب.])

مَسْطَبَةٌ and مِسْطَبَةٌ are sings. of مَسَاطِبُ, which signifies The [wide benches, of stone or brick, &c., generally built against a wall, called] دَكَاكِين, upon which people sit: (AZ, Ḳ:) [and particularly such as surround the court of a mosque: for] one says, رَأَيْتُهُمْ قَاعِدِينَ عَلَى المَسَاطِبِ, meaning [I saw them sitting upon] the دَكَاكِين around the court of the mosque. (A. [See also art. صطب.])

The pl. also signifies Blacksmiths' anvils. (IAạr, Ḳ. [See, again, art. صطب.])

And Waters stopped up, or choked up, with earth or dust; or altered for the worse by long standing; syn. مِيَاهٌ سُدُمٌ [q. v.]. (IAạr, Ḳ.)