The Taub–NUT metric (/ t ɔː b n ʌ t /, /- ˌ ɛ n. j uː ˈ t iː /) is an exact solution to Einstein's equations. It may be considered a first attempt in finding the metric of a spinning black hole. It is sometimes also used in homogeneous but anisotropic cosmological models formulated in the framework of general relativity.