Word: stall
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Dates: during 1940-1949
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...right foreleg in his rope, and Farmer Plaisted shoved him around with his shoulder and tugged at the rope until the foot was free. He inspected the 14 milk cows, loaded two wheelbarrows with manure and dumped them on the dung heap outside. After cleaning out the horses' stall, he called it a day, apologizing for his lack of energy...
...increased by increasing the angle of attack (i.e., the angle at which it meets the air stream). If the angle becomes too great, the air stream does not flow smoothly over the wing; it breaks into turbulent eddies. The wing loses most of its lift, and the stall that results can throw the airplane, into a disastrous spin. The danger of stalling can be lessened by slots behind the leading edge of the wing. The slots feed thin layers of air to the wing's upper side and suppress the dangerous turbulence...
...wings of many birds are also slotted so that the angle of attack (and the lift) may be increased without risking a stall. They have a movable feather called an "alula," which usually rests against the leading edge. When the bird needs extra lift from its wings (i.e., for a quick, high-angle climb), it increases its wings' angle of attack. Then it opens a slot by moving the alula. A thin stream of air rushes over the wing, preventing a stall...
...airplane will also stall when it flies too slowly. Birds, like planes, are equipped with "flaps": movable sections which can be protruded from the trailing edges of the wings. When slowing down for a landing, birds often spread their tails at a proper angle of attack. The tail acts exactly like airplane flaps, providing extra lift and keeping the bird from stalling...
...Wise Men . . . were not offended when the king was not born in Jerusalem. They left the Temple and went to the cow stall...