1) Of nets 
of nets; using nets as a weapon; catching insects in webs
• (a.) Armed with a net; hence, skillful to entangle. • (a.) Netlike. • (n.) Any spider which spins webs to catch its prey. • (n.) A retiarius. • (a.) Constructing or using a web, or net, to catch prey; -- said of certain spiders.
1. <zoology> Any spider which spins webs to catch its prey. ... 2. A retiarius. ... (10 Mar 1998) ... 
Re'ti·a·ry noun [ See Retiarius .] 1. (Zoology) Any spider which spins webs to catch its prey. 2. A retiarius. Re`ti·a·ry adjective [ Confer Late Latin retiarius .] 1. Netlike. « This work is in retiary , or hanging textures.» Sir T. Browne. 2. Constructing or using a web, or net, to catch prey; -- said of certain spiders. 3. Armed with a net; henc...