If you jump, you bend your knees, push against the ground with your feet, and move quickly upwards into the air.

If you jump from something above the ground, you deliberately push yourself into the air so that you drop towards the ground.

If you jump something such as a fence, you move quickly up and through the air over or across it.

If you jump somewhere, you move there quickly and suddenly.

If something makes you jump, it makes you make a sudden movement because you are frightened or surprised.

If an amount or level jumps, it suddenly increases or rises by a large amount in a short time.

If someone jumps a queue, they move to the front of it and are served or dealt with before it is their turn.

If someone jumps on you or jumps you, they attack you suddenly or unexpectedly.

If you jump at an offer or opportunity, you accept it quickly and eagerly.

If someone jumps on you, they quickly criticize you if you do something that they do not approve of.

If you get a jump on something or someone or get the jump on them, you gain an advantage over them.

If you say that someone is jumping up and down, you mean they are very excited, happy, or angry about something.