Edward William Lane, An Arabic-English Lexicon, ط

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طِينٌ ذ a word of well-known meaning, (S, Msb, K, TA,) of which ↓ طَانٌ is a dial. var.; (TA;) Clay, earth, mould, soil, or mud: (MA, KL, &c.:) it differs in different layers, or strata, of the earth; the best is the pure, unmixed with sand, remaining after the subsiding of the waters; and the best of this is that of Egypt, which has a peculiar property of preventing plague, or pestilence, and the corruption of water into which it is thrown: it is of several sorts; among which are الطِّينُ المَخْتُومُ [Terra sigillata, or Lemnian earth], and الطِّينُ الأَرْمَنِىُّ [Armenian bole], &c.: (TA:) ↓ طِينَةٌ has a more particular signification, (S, Msb,) meaning a piece, or portion, thereof, (K, TA,) [as a piece of clay] with which a [writing of the kind termed] صَكّ and the like are sealed. (TA.) [Hence,] شَهْوَةُ الطِّينِ [The longing for clay; a sort of malacia]. (TA voce حُمَّاضٌ.) And اِبْنُ الطِّينِ Adam. (T in art. بنى.)