- The definition of a barnacle is a small crustacean that affixes itself to surfaces such as a rock, a large sea animal, or the part of a boat that is in the water.
A shellfish that spends its adult life attached to a boat is an example of a barnacle.
Barnacles on the hull of a ship.
- barnacle goose
- any member of various orders of saltwater cirriped crustaceans that cement themselves to rocks, wharves, ship bottoms, etc. and to other animals, as whales, after a free-swimming larval stage
- a person or thing hard to get rid of
Origin of barnacleMiddle English bernacle, earlier bernak ; from Middle Irish bairnech and amp; Breton bernik, kind of shellfish: ultimately via Gaulish an unverified form berna, split ; from Indo-European base an unverified form bher-, to slit
- Any of various marine crustaceans of the subclass Cirripedia that in the adult stage form a hard shell which remains attached to submerged surfaces such as rocks and ships' hulls, and that have feathery appendages used for filter feeding.
- The barnacle goose.
Origin of barnacleMiddle English, barnacle goose, from Old French bernacle, from Medieval Latin bernacula, diminutive of bernaca, of unknown origin.
- A marine crustacean of the subclass Cirripedia that attaches itself to submerged surfaces such as tidal rocks or the bottoms of ships.
- The barnacle goose.
- (engineering, slang) In electrical engineering, a change made to a product on the manufacturing floor that was not part of the original product design.
- (computing, slang) On printed circuit boards, a change such as soldering a wire in order to connect two points, or addition such as an added resistor or capacitor, subassembly or daughterboard.
- (archaic, UK) A nickname for spectacles.
(third-person singular simple present barnacles, present participle barnacling, simple past and past participle barnacled)
- To connect with or attach.
- To press close against something.
From Middle English barnakille, from earlier bernake, bernekke, from Old French bernaque (“barnacle”), from Gaulish *barenica (“limpet”) (compare Welsh brennig, Irish báirneac), from *barenos (“rock”) (compare Old Irish barenn (“boulder”)); for sense development, compare Ancient Greek λέπας (lépas, “rock”) which gave λεπάς (lepás, “limpet”).