ichor

Etymology

For sense 1 ("liquid said to flow in place of blood in the veins of the gods"), the word is borrowed from Medieval Latin ichor, from Ancient Greek ῑ̓χώρ (īkhṓr, "fluid running through the veins of gods, ichor; watery part of blood, lymph, serum; watery part of milk, whey; gravy; pus; naphtha"); its further origin is unknown, though it is probably from Pre-Greek. For sense 2.4 ("fetid, watery discharge from a sore"), it comes from Middle English icor, icore [and other forms], from Medieval Latin ichor, as above.