a forked bone (the furcula) between the neck and breast of a bird. According to a popular custom, this bone from a cooked bird is broken by two people and the holder of the longer portion is then entitled to make a wish
a forked element in the suspension of a motor vehicle or aircraft, typically attached to a wheel at one end with the two arms hinged to the chassis
double wishbone suspension
a boom in two halves which curve outwards around a sail and meet aft of it