It is a handy word, that is, meaning a distinctive, individual form of speech. At least, I find it rather handy, but then, I am rather idiolectic in my speech. I commonly use obscure words, like bole for tree trunk, or ugsome for something horrible, or stravage for wandering about. I have picked up a fair number of Scottish or Irish phrases, words and pronunciations, which I use daily without realising that I do it. I have lived in California my whole life, and yet have an odd accent that is frequently taken for Canadian by Americans... and a Canadian I talked to once, was sure I was from Newfoundland. Add to all of this a tendency to quote from a wide variety of sources, ranging from Gilbert and Sullivan, to The Pirates of the Caribbean, and one could say that I have practically developed my own dialect. Fortunately for me, my family and friends share this tendency, so we understand each other perfectly.