Pronunciation (UK) IPA (key): /wæɡ.ən/ Audio (US)(file) Hyphenation: wag‧on Noun Singular wagon Plural wagons (countable) A wagon is a cart with four wheels. This brown wagon has very small wheels. (countable) A wagon is railway car for goods. The wagon of the red train is loaded with wood. Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads