ground-cablen. that portion of a mooring-cable which is intended to lie on the sea-bottom.
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society > travel > travel by water > vessel, ship, or boat > equipment of vessel > anchoring equipment > [noun] > anchor rope or cable > portion intended to lie on bottom
ground-cable1793
1793 J. SmeatonNarr. Edystone Lighthouse (ed. 2) §129 Our ground cables for the sloop could not yet be got ready.