Definition of "Manifold" :

noun: a pipe that has several lateral outlets to or from other pipes

noun: a set of points such as those of a closed surface or an analogue in three or more dimensions

noun: a lightweight paper used with carbon paper to make multiple copies

"An original and two manifolds."

verb: combine or increase by multiplication

verb: make multiple copies of

adjective: many and varied; having many features or forms

"Manifold reasons."