I am Japanese but I don't know ON reading of M.
So I feld for it.But I found only example νM.
I think You seem to know about ν.
ν means container,redeptacle or vessel.(ONreading:KI KUNreading:UTUWA)
νM means dish.(Reading:KIBEI noun phrase)
Type of same meaning KANJI combination.
I think KIBUTU don't used common in japanese.
If you look and read this kanji in japan.
Maybe you will see using examples ₯νM(china),©νMipotteryj,aHνMidishes for Japanese foodjetc.
Then you should read JIKIZARA,TOUKIZARA,WASHOKKIZARA.