{ ‖‖ } n. pl. [ NL., fr. Gr. fyla`ssein to guard + laimo`s the gullet. ] (Zool.) An order of fresh-water Bryozoa in which the tentacles are arranged on a horseshoe-shaped lophophore, and the mouth is covered by an epistome. Called also Lophopoda, and hippocrepians. [ 1913 Webster ]