The Collaborative International Dictionary of English v.0.48:

Cirriped \Cir"ri*ped\, n. (Zool.)
   One of the Cirripedia.
   [1913 Webster]

WordNet (r) 3.0 (2006):

cirriped
    n 1: marine crustaceans with feathery food-catching appendages;
         free-swimming as larvae; as adults form a hard shell and
         live attached to submerged surfaces [syn: barnacle,
         cirriped, cirripede]