Or just Choke. A location on the game map where the topography restricts access to an attacking force in favour of a defending force. This is an area that is easily defended at relatively little cost, but expensive for the enemy to capture once fortified. e.g.: a mountain pass, or a shallow point that is accessible through a river. Any attackers are forced into a bottleneck and thus vulnerable to any entrenched and protected defensive fire. Chokes can make or break invasions, letting a small force stop or destroy one that is considerably bigger and nastier than itself. Any mug who thinks that all there is to winning RTS is building the biggest army fastest and then rushing the enemy obviously hasn't blundered into a well defended choke, or only plays maps that permit unrestricted movement. If the game allows the creation of walls or other obstacles, you can build your own chokes as effective defences around your base.
a group of civilian and military facilities
a leverage point that can work against us
a narrowing of the cove that boats navigate through
a point in the map where the action is concentrated into one small area, eg
A choke point forces attackers to use a narrow channel which you can monitor and control.
Location in the crushing chamber with the minimum cross section. All compression type crushers have choke points.
In computer security, a place in a system where input is routed for the purposes of performing data validation. The implication is that there are few such places in a system, and that all data must pass through one or more of the choke points. The idea is that funneling input through a small number of choke points makes it easier to ensure that input is properly validated. One potential concern is that poorly chosen choke points may not have enough information to perform input validation that is as accurate as possible.
In military strategy, a choke point is a geographical feature (such as a valley or defile) which forces an army to go into a narrower formation (greatly decreasing combat power) in order to pass through it. A choke point would allow a numerically inferior army to successfully fend off a larger army since the attacker would not be able to bring his superior numbers to bear.