American Heritage® Dictionary of the English Language, Fourth Edition
- n. A flexible, airtight hollow ring, usually made of rubber, that is inserted into the casing of a pneumatic tire for holding compressed air.
- n. an inflatable rubber tube that fits inside the casing of a pneumatic tire
“We stayed at the Sport Hotel on the water in Tihany and I spent much of my time paddling around on an inner tube in the lake.”
Looking for tweets for inner tube.