Reference

Threat - Definition

A communicated intention to inflict some kind of harm on the person or property of another. A threat may be made with the intention to intimidate another person, to overcome their will, to unsettle their mind, or to restrain their freedom of action. A threat may amount to an actionable assault where it creates in the recipient a reasonable apprehension of imminent violence or danger: Barton v Armstrong [1969] 2 NSW 451. See also Assault; False imprisonment.

(Ref: Butterworths Concise Australian Legal Dictionary)