WordReference Random House Unabridged Dictionary of American English © 2026
trunk pis′ton, [Mach.]
  1. Mechanical Engineeringa piston with a long skirt to take the side thrust, as in an automobile engine.

'trunk piston' also found in these entries (note: many are not synonyms or translations):

Forum discussions with the word(s) "trunk piston" in the title:


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