Definition of "tunneling"

The act of burrowing a tunnel.  examples

The practice of exploring tunnel.  examples

(physics) The quantum mechanical passing of a particle through an energy barrier.  examples

(finance) A type of fraud where assets and profits are transferred out of firms for the benefit of those who control them.  examples

(computing, Microsoft Windows) A feature of the file system that allows files to preserve certain properties, such as creation date, even after being deleted and recreated.  examples

present participle and gerund of tunnel  examples