1That fights with a net; using a net like a retiarius. Also figurative rare.
2Of the nature of a net; net-like; using or involving a net or nets. Also figurative. Now chiefly literary.
Mid 17th century (in an earlier sense). From classical Latin rētiārius (noun) gladiator, in post-classical Latin also net maker, (adjective) that makes a net or web.