De Havilland Moth
The de Havilland Moths were a series of light aircraft, sports planes, and military trainers designed by Geoffrey de Havilland. In the late 1920s and 1930s, they were the most common civilian aircraft flying in Britain, and during that time every light aircraft flying in the UK was commonly referred to as a Moth, regardless if it was de Havilland-built or not. The first Moth was the DH.60 - a straight-winged biplane two-seater. To enable storing the plane in small spaces, the DH.60's wings could fold backwards against the fuselage. "Like a moth" remarked  Geoffrey de Havilland, an avid lepidopterist, so the plane was nicknamed Moth from the drawing board on. The Moth was one of the first practical light aircraft designs to be intended for civilian training and recreational use, rather than for military buyers. The Moth was also one of the first light aircraft to be mass produced, and was available to a much wider section of the general public than previous aircraft designs. First variations of the name began with changes in the engine used for the DH.60: Variants with a Cirrus Hermes, Armstrong Siddeley Genet, or de Havilland Gipsy engine  became "Hermes Moth", "Genet Moth", or "Gipsy Moth", respectively. The original ADC Cirrus-powered DH.60 retroactively became the "Cirrus Moth". As the DH.60 became more and more popular, de Havilland decided to cash in on the fame of the original by giving each of his new designs a name ending with "Moth". First of them was the DH.61, a giant five-passenger biplane aptly called "Giant Moth". Other Moths include the Leopard Moth and Hornet Moth cabin biplanes, the Puss Moth cabin monoplane. and the Moth Minor low-wing. two-seater. The most famous of the Moths. however, for sheer  numbers built (nearly 9,000), is the DH.82 Tiger Moth - a biplane trainer used during the Second World War in Britain and the Commonwealth of Nations, and the aircraft in which all Second World War RAF pilots learned to fly. The prototype of the DH.84 Dragon light passenger plane was originally called "Dragon Moth", but later the "moth" in its name was dropped as the plane was a civilian airliner and the name moth was to be used for sports planes only.