НАЖДАК noun
Наждак наждак (горная порода)
Synset
                                    НАЖДАК
                
            
                
            [RuThes concept: наждак (горная порода)]
        
    Interlingual Index
                                                                [Wordnet definition: a hard grey-black mineral consisting of corundum and either hematite or magnetite; used as an abrasive (especially as a coating on paper)]
                                                            
                                                        hypernym
POS-synonymy
            [RuThes concept: наждак (горная порода)]
        
    related
            [RuThes concept: корунд]