Definition

Noun: A manually operated pump; a device for moving liquid or gas that uses human power, typically through a lever or handle, rather than electricity or an engine.

Usage

A "hand pump" is a tool for transferring fluids. It is commonly used where no power source is available, for drawing water from a well, inflating items, or transferring fuel. - The old farmhouse still gets its water from a hand pump in the yard. - We used a hand pump to inflate the air mattress during the camping trip.

Advanced Usage

• Historical/Technical Context: Hand pumps are classic examples of simple mechanical engineering, often using a piston or diaphragm mechanism.
• As a Distinguishing Feature: The term can specify the type of pump in contrast to electric or engine-driven models.
  • For safety, only a certified hand pump should be used to transfer this chemical.

Variants and Related Words

• Hand-operated pump: A more formal or descriptive synonym.
• Stirrup pump: A specific type of hand pump with a foot stirrup, historically used for firefighting.
• Bicycle pump: A common type of hand pump designed for inflating tires.

Synonyms

• Manual pump
• Lift pump (specific type for raising water)

Related Phrases/Compounds

• Hand pump well: A well equipped with a hand pump.
• Hand pump dispenser: A bottle or container with a built-in manual pump for liquids like soap or lotion.

Notes

The term is a compound noun where "hand" specifies the method of operation. Its meaning is literal and technical, with few idiomatic uses.

Noun

1. a pump worked by hand