donkey
n.— «Contrary to myth, a helicopter doesn’t necessarily fall out of the sky when the engine, affectionately known among pilots as the “donkey,” stops. The machine can glide to a survivable landing (albeit a brick-like one), much as a sycamore seed rotates to the ground, but only if the pilot makes the right moves, and quickly.» —“Get your rotors running: learn to fly a helicopter” by Tony Newton Belfast Telegraph (Ireland) June 5, 2006. (source: Double-Tongued Dictionary)
Further reading
Centuries ago, monks who took a vow of silence developed their own hand signs, with hundreds of gestures, that are still in use today. Plus, how do speakers of different languages distinguish similar shades and tints of colors such as red, yellow...
Some people work hard to lose their accent in order to fit in. Others may be homesick for the voices they grew up with and try to reclaim them. How can you regain your old accent? Also, a compelling book about scientific taxonomy shows how humans...