meirbh

spiritless, delicate, so Irish, Early Irish meirb, Welsh merw: *mervi-; Old High German maro, soft, mellow, German mürbe, Anglo-Saxon mearo, Norse merja, crush; Greek $$Gmaraínw, destroy, $$Gmárnamai, fight; Latin martus, hammer, "crusher"; etc. See marbh from the same root ultimately (mer, mar). Hence merbh, digest.