A tackle or set of ropes used to haul up the lower corners of a sail simultaneously on large sailing ships.
From clew (corner of a sail) plus garnet (a nautical tackle system). A compound term from sailing terminology, combining two technical elements of sail control.
Clewgarnet is the kind of hyper-specific maritime term that makes you realize sailors had precise words for things landlubbers never think about—it's not just 'rope stuff,' it's THE rope system for one particular purpose.
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