a boat suitable for use in rough seas.
bolt from (out of) the blue
Also, a bolt out of the blue. A sudden, unexpected event. For example, Bill’s dropping his life insurance was a bolt from the blue for his wife. This metaphoric term alludes to totally unforeseen lightning or thunder from a cloudless (blue) sky. [ First half of 1800s ]
the head of a bolt. Chemistry. (formerly) a matrass. Historical Examples The Adventures of Huckleberry Finn Mark Twain Fragments of science, V. 1-2 John Tyndall
a hole in the ground, protected opening in bushes, etc., into which an animal can flee when pursued or frightened. a place or avenue of escape or refuge: The remote mountain village was a safe bolt-hole for refugees during the war. Historical Examples Highways and Byways in The Border Andrew Lang The Pit Prop Syndicate […]