manifold

1. A copy made by the manifold writing process.
2. A pipe fitting or similar device that connects multiple inputs or outputs.
3. (chiefly in the plural) The third stomach of a ruminant animal, an omasum.
4. A topological space that looks locally like the "ordinary" Euclidean space \mathbb{R}^n and is Hausdorff.
5. A polygon mesh representing the continuous, closed surface of a solid object

1. Various in kind or quality; diverse.

   The manifold meanings of the simple English word set are infamous among dictionary makers.

2. Many in number, numerous; multiple, multiplied.
3. Complicated.
4. Exhibited at diverse times or in various ways.

adverb

Many times; repeatedly.

1. To make manifold; multiply.
2. To multiply or reproduce impressions of by a single operation.