Edward William Lane, An Arabic-English Lexicon, ط

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طَيَّارٌ ذ (tropical:) A sharp, spirited, vigorous, horse, (K, TA,) that is almost made to fly by reason of the vehemence of his running; (TA;) as also ↓ مُطَارٌ . (K, TA. [The latter word in the CK written مَطار; but said in the TA to be with damm, and so written in a copy of the A.]) [See also طَيُّورٌ.] ― -b2- See also مُسْتَطِيرٌ. -A2- Also A company of men. (O.) -A3- As applied to A balance, it is not of the language of the Arabs: (O:) [i. e., it is post-classical:] it means an assay-balance (مِيزَانٌ and مَعْيَارٌ) for gold; so called because of the form of a bird, or because of its lightness: or the balance for dirhems [or moneys] that is known among them [who use it] by the appellation of the قارسطون [meaning the χαριστίων of Archimedes, (as is observed in a note in p. 178 of vol. ii. of the sec. ed. of Har,) i. e. the hydrostatic balance]: or, accord. to El-Fenjedeehee, the tongue (لِسَات) of the balance. (Har pp. 549-50.)