Definition of "leakage"

An act of leaking, or something that leaks.  examples

The amount lost due to a leak.  examples

An undesirable flow of electric current through insulation.  examples

Loss of retail stock, especially due to theft.  examples

(sound recording) The situation where sound is picked up by a microphone from a source other than that which is intended.  examples

(economics) The loss of revenue generated by tourism to the economies of other countries.  examples