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nounan (apparently) flying object whose nature is unknown; especially those considered to have extraterrestrial origins
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Definition that contains ufo
- calm wind moving at less than 1 knot; 0 on the Beaufort scale
- storm a violent weather condition with winds 64-72 knots (11 on the Beaufort scale) and precipitation and thunder and lightning
- hurricane a severe tropical cyclone usually with heavy rains and winds moving at 63-136 knots (12 on the Beaufort scale)
- gale a strong wind moving 45-90 knots; force 7 to 10 on Beaufort scale
- mackenzie a Canadian river; flows into the Beaufort Sea
- bufo any toad of the genus Bufo
- light breeze wind moving 4-7 knots; 2 on the Beaufort scale
- calm air wind moving at less than 1 knot; 0 on the Beaufort scale
- near gale wind moving 32-38 knots; 7 on the Beaufort scale
- leptodactylidae New World frogs; in some classifications essentially coextensive with the family Bufonidae