Meaning

noun a hot fragment of wood or coal that is left from a fire and is glowing or smoldering

originFrom Middle English embre, eymbre, aymer, eymere, emeri, from Old English ǣmyrġe, from Proto-West Germanic *aimuʀjā, from Proto-Germanic *aimuzjǭ, a compound of *aimaz + *uzjǭ. The latter is from Proto-Indo-European *h₁ews- (“to burn”). The b is intrusive and was added in English for ease of pronunciation when the vowel of the second syllable (y) disappeared. See also Old High German eimuria…

Etymology from Wiktionary, CC BY-SA 3.0