Pronunciation: (bol'urd),[key] —n. 1. Naut. a. a thick, low post, usually of iron or steel, mounted on a wharf or the like, to which mooring lines from vessels are attached.
b. a small post to which lines are attached.
c. bitt (def. 1).
2. Brit.one of a series of short posts for excluding or diverting motor vehicles from a road, lawn, or the like.