YCL Views 6 meanings found YCL most often refers to the Young Communist League, a political youth organization, while in sports it can denote a youth cycling league and in science it names the yolk syncytial layer of developing embryos. Community Yeshiva Chanoch Lenaar Governmental Young Communist League Academic & Science Yolk Syncytial Layer Regional Charlo, New Brunswick, Canada Sports Yacht Council Limited Youth Cycling League