The expression of an intention to inflict evil or injury on another; the declaration of an evil, loss, or pain to come; menace; threatening; denunciation.

an individual's awareness of an imminent, widespread change in their environment that poses a possible danger (e.g., a large chemical spill).

An indication of an unwanted incident that could impinge on the system in some way. Threats may be deliberate (e.g., willful damage) or accidental (e.g., operator error).

any circumstance or event with the potential to cause harm to a system [DoD 00

The essence of a chess game. Threats can be subtle, mating positional, etc. Threats are what you would do if you could play 12 or more moves without an opponent.

A THREAT is a move or plan which a player intends to carry out unless his opponent stops him. After 1. e2-e4 e7-e5 2. Qd1-h5, White ATTACKS e5, f7 and h7, but only Qh5xe5 is a THREAT: White THREATENS to take the e-pawn.

Being attacked. This term is new, coming from World of Warcraft specifically, meaning that a player is being attacked by a monster.

A threat is a mating continuation that is threatened after the key. Black is compelled to answer the threat with moves that create other weaknesses. A double threat is one that threatens two distinct mates.

a warning that something unpleasant is imminent; "they were under threat of arrest"

an avowal to do or not to do something

A threat is any statement that takes the form "you do something I want, or I will do something you do not want." According to Kenneth Boulding's theory of power, threat is one of three forms of power, the other two being exchange and what he calls "love," (which we refer to as the "integrative system").