camelback

Noun

 * 1)  The backs of camels.
 * We travelled across the desert on camelback.
 * 1)  A flexible water container worn on the back.
 * An empty camelback is a blessing and a curse: it is easy to carry, but it means you have no water.
 * 1)  A house with a second storey that does not completely cover the ground floor.
 * My friend lived in a camelback; we used to have fun climbing out of the window onto the roof below.
 * 1)  A railway locomotive that has its cab in the middle as opposed to at the end.
 * The camelbacks were designed to help with the visibility problems inherent in putting the driver behind the entire engine.
 * 1)  A sofa or chair whose back has a raised middle part.
 * He fell back relieved into his favourite camelback with a gin and tonic.
 * 1)  A type of rubber used in tyre restoration.
 * We require four million tons of camelback each year.
 * The camelback rubber produced in this plant is shipped around the world.