pistons noun Stress: first syllable 🤍 Save Syllables: pis-tons (2) English Definition Moving cylinders in an engine that transfer force from expanding gas. Example Sentence The pistons of the engine are working smoothly. US IPA /ˈpɪstənz/ 🔊 Listen US UK IPA /ˈpɪstənz/ 🔊 Listen UK Synonyms cylinders plungers valves Share this Word Facebook WhatsApp X Telegram Copy Link