From qalal; brightened (as if sharpened) -- burnished, polished.
see HEBREW qalal
H7044. qalal
קָלָל adjective burnished (from light, quick movement of rubbing ?); — ק ׳נְחשֶׁת burnished brass Ezekiel 1:7: Daniel 10:6 (so most; Co, Ezekiel, קַלּוֺת, in prefixing כַּנְפֵיהֶם from 10:8; Daniel then follows corrupt Ezekiel.