stew (dish)

(art) A small scale work, designed to give a painter or sculptor practice in a particular area or skill.

(computer hardware) a central processing unit

source of a river

epicenter(AmE), epicentre(BrE) - the point on the Earth's surface directly above the focus of an earthquake. / (figuratively) The focal point of any activity, especially if dangerous or destructive .

intellectual / the intelligentsia

species/type/kind/variety of tree

third class

dog breed

(taxonomy) a subspecies / variant