Meaning of SHELLPROOF

Pronunciation:			'shel`proof
WordNet Dictionary
	Definition:		[adj]  able to resist the explosive force of bombs and shells; "bombproof shelter"
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	Synonyms:		bombproof, invulnerable
Webster's 1913 Dictionary
	Definition:		\Shell"proof`\, a. Capable of resisting bombs or other shells; bombproof.