noun Rocketry Slang.
a switch that triggers the destruction in flight of a malfunctioning missile.
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What Does 🅱️ B Button Emoji Mean?The negative squared Latin capital letter B emoji, , (that's a mouthful) has come a long away from its intended meaning.
Also called chicken switch.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019