A roundish mass of lava thrown out of a volcano. Chiefly in volcanic bomb.
| 单词 | θ5810 | 
| 释义 | the world > the earth > structure of the earth > constituent materials > ejected volcanic material > 			[noun]		 > volcanic bomb (2)		 bomb1780 A roundish mass of lava thrown out of a volcano. Chiefly in volcanic bomb. breadcrust bomb1888 As a modifier. Geology. Designating a structure or texture resembling that of bread crust. Frequently in breadcrust bomb n. a volcanic bomb (see bomb…  | 
	
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