parapodium

‖n.; pl. Parapodia [ NL., fr. Gr. para` beside + &unr_;, dim. of &unr_; foot. ] (Zool.) One of the lateral appendages of an annelid; -- called also foot tubercle. [ 1913 Webster ]

☞ They may serve for locomotion, respiration, and sensation, and often contain spines or setæ. When well developed, a dorsal part, or notopodium, and a ventral part, or neuropodium, are distinguished. [ 1913 Webster ]