Where does “murin” come from?

murin (Old French) comes from Old French morir, from Latin morior, from Proto-Italic *moriōr — to die.

Ancestry of “murin”, step by step

StepLanguageWordMeaning
1Old Frenchmorirto die; to kill
2LatinmoriorI die; I decay, wither
3Proto-Italic*moriōrto die
Every word from Proto-Italic *moriōr →Every word from Latin morior →Every word from Old French morir →