seacock ( synonym found)
Definition of seacock:

°(nautical) A valve in the hull of a vessel used to let in water, either to clean the bilges, flood a ballast tank, or scuttle the vessel.
Definition of seacock:

°(nautical) A valve in the hull of a vessel used to let in water, either to clean the bilges, flood a ballast tank, or scuttle the vessel.
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