What is the meaning of the word "flowage"?

Definitions:

  1. a body of water that has been created by deliberately flooding an area copy to clipboard noun
    • many campsites were located near the flowage copy to clipboard
  2. gradual internal motion or deformation of a solid body (as by heat) copy to clipboard noun
    • rock fracture and rock flowage are different types of geological deformation copy to clipboard

Synonyms: