weirplate

Etymology
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Noun

 * 1) A metal plate that forms an obstruction to adjust the flow of a weir.
 * 2)  An adjustable plate that controls the amount of liquid held in a chamber of a machine.
 * 1)  An adjustable plate that controls the amount of liquid held in a chamber of a machine.
 * 1)  An adjustable plate that controls the amount of liquid held in a chamber of a machine.
 * 1)  An adjustable plate that controls the amount of liquid held in a chamber of a machine.