volcanic bomb

Webster's Dictionary (GCIDE)

1.Of or pertaining to a volcano or volcanoes; as, volcanic heat. [1913 Webster]

2.Produced by a volcano, or, more generally, by igneous agencies; as, volcanic tufa. [1913 Webster]

3.Changed or affected by the heat of a volcano. [1913 Webster]

Volcanic bomb, a mass ejected from a volcano, often of molten lava having a rounded form.

Volcanic cone, a hill, conical in form, built up of cinders, tufa, or lava, during volcanic eruptions.

Volcanic foci, the subterranean centers of volcanic action; the points beneath volcanoes where the causes producing volcanic phenomena are most active.

Volcanic glass, the vitreous form of lava, produced by sudden cooling; obsidian. See Obsidian.

Volcanic mud, fetid, sulphurous mud discharged by a volcano.

Volcanic rocks, rocks which have been produced from the discharges of volcanic matter, as the various kinds of basalt, trachyte, scoria, obsidian, etc., whether compact, scoriaceous, or vitreous. [1913 Webster]

1.A great noise; a hollow sound. [Obs.] [1913 Webster]

A pillar of iron . . . which if you had struck, would make . . . a great bomb in the chamber beneath.— Bacon.[1913 Webster]

2.(Mil.) A shell; esp. a spherical shell, like those fired from mortars. See Shell. [1913 Webster]

3.A bomb ketch. [1913 Webster]

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. [1913 Webster]