pop up

pop something up

to remove something by making it jump or burst upwards. Henry popped the lid up and helped himself to the strawberry preserves. He popped up the lid and cleaned out the jam jar.

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pop up 

1. [for a baseball batter] to hit a baseball that goes high upward rather than outward. The catcher came to bat and popped up. I hope I don't pop up this time.

2. [for a baseball] to fly high upward rather than outward. The ball popped up and went foul. The ball will always pop up if you hit it in a certain way.

3. to arise suddenly; to appear without warning. New problems keep popping up all the time. Billy popped up out of nowhere and scared his mother.

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pop up (some place)

to appear suddenly and unexpectedly some place. I never know where Henry is going to pop up next. A new problem has popped up.

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pop up

to appear suddenly After World War II, pizzerias popped up in every city in the nation.

See also: pop, up