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Definition of Barnacle
1. Noun. Marine crustaceans with feathery food-catching appendages; free-swimming as larvae; as adults form a hard shell and live attached to submerged surfaces.
Generic synonyms: Crustacean
Group relationships: Cirripedia, Subclass Cirripedia
Specialized synonyms: Acorn Barnacle, Balanus Balanoides, Rock Barnacle, Goose Barnacle, Gooseneck Barnacle, Lepas Fascicularis
2. Noun. European goose smaller than the brant; breeds in the far north.
Generic synonyms: Goose
Group relationships: Branta, Genus Branta
Definition of Barnacle
1. n. Any cirriped crustacean adhering to rocks, floating timber, ships, etc., esp.
2. n. A bernicle goose.
3. n. An instrument for pinching a horse's nose, and thus restraining him.
Definition of Barnacle
1. Noun. A marine crustacean of the subclass Cirripedia that attaches itself to submerged surfaces such as tidal rocks or the bottoms of ships. ¹
2. Noun. The barnacle goose. ¹
3. Noun. (context: engineering slang) In electrical engineering, a change made to a product on the manufacturing floor that was not part of the original product design. ¹
4. Noun. (context: 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. ¹
5. Noun. (obsolete) An instrument like a pair of pincers, to fix on the nose of a vicious horse while shoeing so as to make it more tractable. ¹
6. Noun. (archaic British) A nickname for spectacles. ¹
7. Noun. (slang obsolete) A good job, or snack easily obtained. ¹
8. Verb. To connect with or attach. ¹
9. Verb. To press close against something. ¹
¹ Source: wiktionary.com
Definition of Barnacle
1. a shellfish [n -S] - See also: shellfish
Medical Definition of Barnacle
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