cirripede in British English
(ˈsɪrɪˌpiːd), cirriped (ˈsɪrɪˌpɛd) or cirrhipede (ˈsɪrɪˌpiːd)
noun1. any marine crustacean of the subclass Cirripedia, including the barnacles, the adults of which are sessile or parasitic
adjective2. of, relating to, or belonging to the Cirripedia