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.
In place of this laissez-faire eugenics, Kitcher proposes what he calls âutopian eugenics.â Its goals are to bring into the world children whose lives are unrestricted by serious genetic disease and who are assisted to realize the highest possible degree of development.