The gooseneck is the swivel connection on a sailboat located near the bottom of the mast that the boom attaches to. When a sailboat performs a tack or a jibe the boom moves from one side of the boat to the other by swivelling on the gooseneck.
A species of barnacle is sometimes called the Gooseneck Barnacle, or the Goose barnacle, due to its resemblance to the head and neck of a goose.
