طحم1 طَحَمَهُ, [aor. ـَ inf. n. طَحْمٌ, He filled it. (TA.) طَحْمَةٌ (S, K) and ↓ طُحْمَةٌ (K, and thus also in some copies of the S) and ↓ طِحْمَةٌ (K) The دُفْعَة [as meaning tide, or rush,] of a torrent, (S, K,) and so [as meaning tide] of a valley, (K,) and so [as meaning irruption, or invasion,] of night; (S, K;) and the greater, or main, part of a torrent, and of night: (S:) or the first دُفْعَة, and the greater, or main, part: or the impulse, or driving, of the greater, or main, part [of a torrent]: and accord. to Z, طحمةُ اللَّيْلِ is tropical, and means (tropical:)  the greater, or main, part of the blackness of night. (TA.) b2:  And (tropical:)  A company, or congregated body, of men: (S, A, K, TA:) or, as in the M, a rush, or rushing body, of men, more in number than such as are termed قَادِيَة, which means the first that come to one, or come upon one. (TA.) b3:  And طَحْمَةُ الفِتْنَةِ means (tropical:)  The جَوْلَة [or wheeling about, or the defeat, and return to fight,] of men on the occasion of فتنة [i. e. conflict and faction, or the like]. (TA.) A2:  See also طَحْمَآءُ.طُحْمَةٌ: see the next preceding paragraph.طِحْمَةٌ: see the next preceding paragraph.طُحَمَةٌ A man vehement in conflict. (S, K.) A2: And Numerous camels. (K.) طَحْمَآءُ A species of plant, (S, K,) growing in plain, or soft, land, of the kind called حَمْض: (TA:) or i. q. نَجِيلٌ, (AHn, K, TA,) which is the best of all the حَمْض, [herbaceous, i. e.] not having wood fit for fuel nor such as is fit for carpentry, and eaten by the camels; (AHn, TA;) as also ↓ طَحْمَةٌ, (K, TA,) which is said by AHn to be of the kind called حَمْض, broad in the leaves, and having much juice. (TA.) طَحْومٌ That impels, or propels, much, or vehemently: (K:) applied to a bow; as also طَحُورٌ: or a bow of which the arrow is swift. (TA.) سُيُولٌ طَوَاحِمُ i. q. دَوَافِعُ [i. e. Torrents pouring as though impelling, or propelling, themselves]. (TA.) مَطْحُومٌ Filled. (K.)