| 释义 | seacock
 sea·cockS0184750 (sē′kŏk′)n. A valve in the hull of a boat or ship that may be opened to let in or discharge water, as in filling or emptying a ballast tank.seacock(ˈsiːˌkɒk) n (Nautical Terms) nautical a valve in the hull of a vessel below the water line for admitting sea water or for pumping out bilge watersea•cock(ˈsiˌkɒk)
 n.   a valve in the hull of a ship for admitting seawater into some internal chamber, as for ballast.  [1660–70]
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