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Definitions from the Web

Pump On

Noun

1. A type of water pump that is designed to start automatically when the water pressure drops below a certain level.

Example sentence: The pump on the well broke, so we had to call a plumber to fix it.

Verb

1. To operate or activate a pump.

Example sentence: Please pump on the gas to inflate the balloon.

Adjective

1. Describing something that is powered or operated by a pump.

Example sentence: The pump-on toy boat glided smoothly across the water.

Adverb

1. In a manner related to operating or using a pump.

Example sentence: They turned the switch pump on to fill the swimming pool.