| n. pl. | 1. | (Zool.) An order of Crustacea including the barnacles. When adult, they have a calcareous shell composed of several pieces. From the opening of the shell the animal throws out a group of curved legs, looking like a delicate curl, whence the name of the group. See Anatifa. |
| Noun | 1. | Cirripedia - barnacles Synonyms: subclass Cirripedia |
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