fiber bundle

Short definition from Wiktionary

Noun

1. 1
   Synonym of vascular bundle.
2. 2
   An abstract object in topology where copies of one object are "attached" to every point of another, as hairs or fibers are attached to a hairbrush. Formally, a topological space E (called the total space), together with a topological space B (called the base space), a topological space F (called the fiber), and surjective map π from E to B (called the projection or submersion), such that every poi