- (British English)
a short thick post that is used to stop vehicles from going on to a road or part of a road （阻止车辆开到某段路上的）路桩 
a short thick post on a ship, or on land close to water, to which a ship’s rope may be tied （甲板或岸边的）带缆桩，系船桩
Word OriginMiddle English (in sense (2)): perhaps from Old Norse bolr; perhaps related to baulk + -ard.