One of my staff submitted a safety article for our Company newsletter that gave the following definition of safety from Webster's Encyclopedic Unabridged Dictionary of the English Language (1996): "the quality of averting nor causing injury, danger or loss."

One of the readers inquired as to how the use of the word "nor" here could possibly be correct.

If it is in fact a correct usage, I'm hoping that somebody can explain the rule.

Thank you.
That seems rather unusual. I think it's a misprint.
Nevertheless, "nor" means "and not".

Neither he nor I = Not he and not I.

-- I don't like it.
-- Nor do I (like it either) = And I do not (like it either).

the quality of averting and not causing injury, ..

Water, water, every where,
And all the boards did shrink ;
Water, water, every where,
Nor any drop to drink.

(And not any drop to drink)

-- "The Rime of the Ancient Mariner" by Samuel Taylor Coleridge

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Thank you, CJ, from another Jim in California whose nickname happens to be CJ (but not standing for California Jim).
another Jim in California
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