When someone or something reaches a place, they arrive there.
If someone or something has reached a certain stage, level, or amount, they are at that stage, level, or amount.
If you reach somewhere, you move your arm and hand to take or touch something.
If you can reach something, you are able to touch it by stretching out your arm or leg.
If you try to reach someone, you try to contact them, usually by telephone.
If something reaches a place, point, or level, it extends as far as that place, point, or level.
When people reach an agreement or a decision, they succeed in achieving it.
Someone's or something's reach is the distance or limit to which they can stretch, extend, or travel.
If a place or thing is within reach, it is possible to have it or get to it. If it is out of reach, it is not possible to have it or get to it.