\Ap"te*ra\, n. pl. [NL. aptera, fr. Gr. ? without wings;
'a priv. + ? wing, ? to fly.] (Zo["o]l.)
Insects without wings, constituting the seventh Linn[ae]n
order of insects, an artificial group, which included
Crustacea, spiders, centipeds, and even worms. These animals
are now placed in several distinct classes and orders.