Of or pertaining to, or conforming to, the mode of expression peculiar to a language; as, an idiomatic meaning; an idiomatic phrase.
                                                            
                                                     
                        
                                                
                        
                        
                            Of or pertaining to, or of the nature of an idiom{3}; having a meaning that is peculiar to itself and not predictable from general rules.
                                                            
                                                     
                        
                                                
                        
                        
                            Mother-tongue competence, whether or not it is the speaker's first language.