Webster’s Revised Unabridged Dictionary · 1913 Tectrices Tec′tri·ces (tĕk′trĭ·sēz), n. pl. [NL., fr. L. tegere, tectum, to cover.] (Zoöl.) The wing coverts of a bird. See Covert, and Illust. of Bird. ‹ Tectorial Tecum ›