Acorn Barnacle Definition
noun
Any of various barnacles having a conical shell that is directly attached to rocks or other hard surfaces.
American Heritage
Any of a genus (Balanus) of stalkless barnacles that resemble acorns.
Webster's New World
Synonyms:
- rock barnacle
- Balanus balanoides
Other Word Forms of Acorn Barnacle
Noun
Singular:
acorn barnacle
Plural:
acorn barnaclesOrigin of Acorn Barnacle
From the resemblance of the barnacle in its shell to an acorn in its cupule
From American Heritage Dictionary of the English Language, 5th Edition
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