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plumb rule. In DICTIOUS you will not only get to know all the dictionary meanings for the word
plumb rule, but we will also tell you about its etymology, its characteristics and you will know how to say
plumb rule in singular and plural. Everything you need to know about the word
plumb rule you have here. The definition of the word
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English
Noun
plumb rule (plural plumb rules)
- A narrow board with a plumb line fastened to the top, used to determine a perpendicular.