[Cephalopoda] The eight circumoral appendages in adults of coleoid cephalopods; one pair of modified appendages called "tentacles" lies between the ventral and ventrolateral arms in the "decapodous" Sepioidea and Teuthoidea; one pair of modified, greatly reduced appendages, called retractile filaments, lies between the dorsal and dorsolateral arms in Vampyromorpha.

Alternative form for arms : arm.