Barnacle

Noun

 * 1) A marine crustacean of the subclass Cirripedia that attaches itself to submerged surfaces such as tidal rocks or the bottoms of ships.
 * 2) The barnacle goose.
 * 3)  In electrical engineering, a change made to a product on the manufacturing floor that was not part of the original product design.
 * 4)  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.
 * 5)  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.
 * 6)  A nickname for spectacles.
 * 7)  A good job, or snack easily obtained.

Related terms

 * barnacle goose