The Collaborative International Dictionary
                    Shellproof
                    
                        
                
                                                                    Shellproof \Shell"proof`\, a. Capable of resisting bombs or other shells; bombproof.
Wiktionary
                    shellproof
                    
                        
                
                                                                    a. resistant to shelling.
WordNet
                    shellproof
                    
                        
                
                                                                    adj. able to resist the explosive force of bombs and shells; "bombproof shelter" [syn: bombproof]
Usage examples of "shellproof".
The humans - in their shellproof suits, with bulging appendages of antennae, barrels and sensors, with humps of cartridge pouches and life support systems - looked like beetles scurrying to a carcass.