‖n. pl. [ NL., from Gr.&unr_; bare + &unr_;, &unr_;, offspring. ] (Zool.) birds whose young at first have down on the pterylæ only; -- called also
a. (Zool.) Having down upon the pterylæ only; -- said of the young of certain birds. [ 1913 Webster ]
‖n. pl. [ NL., from Gr.&unr_; bare + &unr_;, &unr_;, offspring. ] (Zool.) birds whose young at first have down on the pterylæ only; -- called also
a. (Zool.) Having down upon the pterylæ only; -- said of the young of certain birds. [ 1913 Webster ]