Wiktionary
                    dot matrix printer
                    
                        
                
                                                                    n. A type of printer that prints characters using an array of small wires that produce an array of dots when striking the paper
WordNet
                    dot matrix printer
                    
                        
                
                                                                    n. a printer that represents each character as a pattern of dots from a dot matrix [syn: matrix printer, dot printer]