acorn barnacle

/ˌeɪˈkɔrn ˌbɑrnəkəl/
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Other forms: acorn barnacles

Definitions of acorn barnacle
  1. noun
    barnacle that attaches to rocks especially in intertidal zones
    synonyms: Balanus balanoides, rock barnacle
    see moresee less
    type of:
    barnacle, cirriped, cirripede
    marine crustaceans with feathery food-catching appendages; free-swimming as larvae; as adults form a hard shell and live attached to submerged surfaces
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