What is "bomb ketch"

Ketch \Ketch\ (k[e^]ch), n. [Prob. corrupted fr. Turk. q[=a][imac]q : cf. F. caiche. Cf. Ca["i]que.] (Naut.)

1. An almost obsolete form of sailing vessel, with a mainmast and a mizzenmast, -- usually from one hundred to two hundred and fifty tons burden.

2. (Naut.) In modern usage, a sailing vessel having two masts, with the main mast taller than the aftermost, or mizzen, mast.

   Bomb ketch. See under Bomb.

Bomb \Bomb\, n. [F. bombe bombshell, fr. L. bombus a humming or buzzing noise, Gr. ?.]

1. A great noise; a hollow sound. [Obs.]

   A pillar of iron . . . which if you had struck, would make . . . a great bomb in the chamber beneath.
   --Bacon.

2. (Mil.) A shell; esp. a spherical shell, like those fired from mortars. See Shell.

3. A bomb ketch.

   Bomb chest (Mil.), a chest filled with bombs, or only with gunpowder, placed under ground, to cause destruction by its explosion.

   Bomb ketch, Bomb vessel (Naut.), a small ketch or vessel, very strongly built, on which mortars are mounted to be used in naval bombardments; -- called also mortar vessel.

   Bomb lance, a lance or harpoon with an explosive head, used in whale fishing.

   Volcanic bomb, a mass of lava of a spherical or pear shape. ``I noticed volcanic bombs.''
   --Darwin.