See under barnacle1(def 1).
Definition for acorn barnacle (2 of 2)
[ bahr-nuh-kuh l ]
/ ˈbɑr nə kəl /
any marine crustacean of the subclass Cirripedia, usually having a calcareous shell, being either stalked (goose barnacle) and attaching itself to ship bottoms and floating timber, or stalkless (rock barnacle or acorn barnacle) and attaching itself to rocks, especially in the intertidal zone.
a person or thing that clings tenaciously.
Origin of barnacle1
1580–85; perhaps a conflation of barnacle barnacle goose with Cornish brennyk, Irish báirneach limpet, Welsh brenig limpets, reflecting the folk belief that such geese, whose breeding grounds were unknown, were engendered from rotten ships' planking
Related formsbar·na·cled, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for acorn barnacle (1 of 2)
/ (ˈbɑːnəkəl) /
Derived Formsbarnacled, adjective
Word Origin for barnacle
C16: related to Late Latin bernicla, of obscure origin
British Dictionary definitions for acorn barnacle (2 of 2)
any of various barnacles, such as Balanus balanoides, that live attached to rocks and have a volcano-shaped shell from the top of which protrude feathery food-catching appendages (cirri)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Science definitions for acorn barnacle
[ bär′nə-kəl ]
Any of various small marine crustaceans of the subclass Cirripedia that form a hard shell in the adult stage and attach themselves to underwater surfaces, such as rocks, the bottoms of ships, and the skin of whales.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.