(military) The areas between a weapon and its target in which the trajectory is not greater than the typical height of a human (about 1.8 meters)

(air traffic control) an airspace within which it is dangerous for aircraft to fly.

plural of gap of danger

(usually with the definite article) a breach, place which is hard to defend; a danger, requiring bravery

(Australian rules football) Kicking at the ball when there is a risk of kicking an opposition player who is trying to pick it up or otherwise close to it. Such a kick is against the rules and results in a free kick to the opponent.

plural of danger area

Extra payment given to anybody, civilian or soldier, who is employed in a situation where the working conditions or locale are considered to be hazardous.

Alternative form of a little knowledge is a dangerous thing

A small amount of knowledge can mislead individuals into believing that they are more experienced and expert than what is actually the case.

It is necessary to foresee danger as it helps you to avoid it.