Webster’s Revised Unabridged Dictionary · 1913
Priapulacea
Pri·ap′u·la′ce·a (prī·ăp′ū·lā′shē·ȧ), n. pl. [NL. See Priapism.] (Zoöl.) A suborder of Gephyræa, having a cylindrical body with a terminal anal opening, and usually with one or two caudal gills.