Past tense of 'caulk'; sealed with waterproof material, especially having gaps or seams filled with rope or similar substance.
Past tense of 'caulk', which comes from Old French 'cauquer' and ultimately Latin 'calcare' (to tread down). Originally referred to the process of hammering caulking material into ship seams.
When sailors 'cauked' wooden ships' planks, they were literally hammering tarred rope between boards to make them watertight—it's why the word has such a solid, forceful sound.
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