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.
The word eugenics was coined in 1883 by the English scientist Francis Galton, a cousin of Charles Darwin, to promote the ideal of perfecting the human race by, as he put it, getting rid of its undesirables while multiplying its desirables -- that is, by encouraging the procreation of the social Darwinian fit and discouraging that of the unfit ...