This is what the word mean. link And i think u heard the word on a Hatsune Miku muziek Video and/or a Hatsune Miku Song of hers. I hope this helps you. And this is on the left side of the picture is a Hatsune Miku Pronect Diva F and F2nd playing card. Ghe right side is a picture of a Hatsune Miku concert Cover Album. -:3