A term of endearment used by Algebraic Topologists when talking about their favorite power tools such as Abelian Groups, Bundles, Homology Groups, Homotopy Groups, k-Theory, Morse Theory, Obstructions, stable homotopy theory, Vector Spaces, etc.
See also Abelian Group, Algebraic Topology, Bundle, Free, Homology Group, Homotopy Group, k-Theory, Obstruction, Morse Theory, Vector Space