What is the meaning of Gash?

A deep cut.

A vulva.

A woman.

A spare kit.

Rubbish.

Rubbish on board an aircraft.

Unused film or sound during film editing.

Poor-quality beer, usually watered down.

Of poor quality; makeshift; improvised; temporary; substituted.

To make a deep, long cut; to slash.

ghastly; hideous

Source: wiktionary.org