Freebase(0.00 / 0 votes)Rate this definition: Tongue. The tongue is a muscular hydrostat on the floors of the mouths of most vertebrates which manipulates food for mastication. It is the primary organ of taste, as much of the upper surface of the tongue is covered in papillae and taste buds.
1. eugenics-the study of methods of improving genetic qualities by selective breeding (especially as applied to human mating). bioscience, life science-any of the branches of natural science dealing with the structure and behavior of living organisms.
Something eugenic relates to the idea that self-selecting genetic characteristics, like hair or eye color, can improve a race. The Nazis' eugenic plans to create a master race marked one of the darkest periods in the twentieth century. The adjective eugenic traces its roots from the Greek word eugenes, meaning well-born.. The field of eugenics aimed in the nineteenth and twentieth centuries to improve the characteristics of a race by promoting certain qualities in its offspring, which they then would pass on to future generations.