turnbuckle(redirected from screw shackle)
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A metal coupling device consisting of an oblong piece internally threaded at both ends into which the corresponding sections of two threaded rods are screwed in order to form a unit that can be adjusted for tension or length.
an open mechanical sleeve usually having a swivel at one end and a thread at the other to enable a threaded wire or rope to be tightened
[C19: from turn + buckle]
a rotating link or sleeve with internal screw threads at each end, used to tighten or connect the ends of a rod or cable.
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|Noun||1.||turnbuckle - an oblong metal coupling with a swivel at one end and an internal thread at the other into which a threaded rod can be screwed in order to form a unit that can be adjusted for length or tension|