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 the 1960s, the Francis Galton Laboratory for the Study of National Eugenics (founded in 1907) became the Galton Laboratory of the Department of Human Genetics and Biometry, and the Galton Professor of Eugenics (founded in 1911, with Pearson the first to hold the chair) became the Galton Professor of Human Genetics.