A strong cable or rope attached to a structure like a tent, pole, or tower to keep it steady and prevent it from falling over.
From 'guy' (a rope or line used to steady something) combined with 'wire.' The word 'guy' comes from French 'guinde' meaning a guide rope. This practical term became standard in English for construction and camping equipment in the 19th century.
Next time you see a tall cell tower or a circus tent, look for the diagonal cables running from the top to the ground—those are guywires, and they're what keeps these tall structures from toppling over in the wind. It's the same principle as how a tightrope walker uses balance poles!
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