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Noun1.lock-gate - a gate that can be locked
gate - a movable barrier in a fence or wall
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References in periodicals archive ?
A section of the canal near Dukes 92 in Castlefield has been drained for urgent lock-gate repair work - and an open invitation has been issued for people to climb down to the bottom and take a look.
A SOLID wall of black, oily water "just like Niagara Falls" which swept through the Glamorganshire Canal lock-gates at Cardiff Docks just before midnight last night carried a 74-ton sand-sucker out to the mud flats, together with three of the lock's four leaves.
The lock-gates, which had been opened for the high-tide, became jammed and wouldn't close.