bernicle

noun
  1. A small crustacean that attaches itself to rocks, ship hulls, and other surfaces in seawater.
  2. Usage: Also called barnacle; bernicle is an archaic or variant spelling.
  3. A type of goose (Branta leucopsis) with black and white plumage, found in northern regions.
  4. Usage: Also called brant goose or bernicle goose; archaic or regional usage.

Examples