to force a substance (i.e., liquid, gas) to move in a certain direction by
Examples of Pump in a sen
The little boy has just learned to pump gasoline into the car’s tank by squeezing the lever.
Because the tire is low on air, you will need to pump some into it before driving off.
The new mother uses a machine to pump breast milk into a bottle so that the baby can eat when she is away.
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