piston
noun/ˈpɪstən/
Frequency rank: #7,949 of 20,003 in the WORDED list (wordfreq data)
Meaning
a sliding disc or cylinder that moves back and forth inside a tube, used to transfer force in an engine or pump.
Example sentence
The mechanic explained how the piston moves up and down inside the engine cylinder.
Synonyms & related words
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