Thanks for researching this.  Did Okrand also approve the spelling *{mInHor}?  (Though I suppose *{mIn’or} is also possible.)

Voragh

From: qurgh lungqIj via tlhIngan-Hol

This word was confirmed as canon by Okrand/Maltz in HolQeD volume 9 issue 4.

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Date: Thu, 9 Mar 2023 00:59:11 +0000 (UTC)
From: James Landau <savegraduation@yahoo.com>

>  SEE ALSO:>[mInHor] (?)   minn'hor (n)
>  - "An ox-like carnivorous animal used for riding" (Kahless [J.M. Friedman's pro novel])
>  - The *minn'hor* is a beast of burden (similar to cattle), the milk of which is used to
>     make cheese.? (Felix, 7/25/2016)

I've never heard of this. I can't find the word at https://www.frathwiki.com/Klingon/lexicon nor at the wiki. It would be a good "fanon" word to confirm as canon with Marc Okrand at the next qep'a' or qepHom, though.