For a considerable time only the top lock was in water.
The top lock is then 'loose' nailed to hold the panel to the wall.
The pumps supply 3,500 gallons per minute (265 l/s) to an outlet near the top lock of the flight.
The top lock has a rise of eleven feet, unusually high for a single lock.
He had already put the master key in the top lock.
Third one- The eleventh key worked in the top lock.
She rummaged through her bag for the key to the top lock and found it.
The house was located close to the top lock.
The top lock has a nature reserve alongside, built during restoration.
He pressed his right ear to the door, held his breath, heard nothing, and addressed the top lock first.
