holystone has definitions from the fields of geology,nautical
1
[ noun ] (geology) a soft sandstone used for scrubbing the decks of a ship

Used in print

(Vina Delmar, The Big Family....)

Heiser , breathless and wild-eyed , brought the chilling news that the handspikes , heavers and holystones had been mysteriously removed from their customary places .

Related terms

sandstone

2
[ verb ] (nautical) scrub with a holystone, as of a ship's deck

Related terms

scrub

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