Barnacle (slang) in the field in order to correct a design or manufacturing defect. The term appears to have originated from the crustacean barnacle which is an animal that attaches itself to rocks, docks, ships, whales, and other objects where it grows. A barnacle in electronics is something added to the manufactured product. Typically a barnacle on a circuit board is very noticeable, much like the mollusc variety on a rock in the sea. While the term was originally used with electronic hardware, it has also migrated into the software industry where is it is used to describe software that is added
Nora Barnacle her father out for drinking and the couple separated. Barnacle went to live with her mother and her uncle, Tom Healy, at 4 Bowling Green, Galway. In 1896, at age 12, Barnacle fell in love with a teenager named Michael Feeney, who died soon after of typhoid and pneumonia. In a dramatic coincidence, another boy she loved, Michael Bodkin, died in 1900 – causing some of her friends to call her "man-killer." Joyce later based the final short story in "Dubliners", "The Dead", on these incidents. It was rumoured that she sought comfort from her friend, budding English theatre starlet,