olibanum (countable and uncountable, plural olibanums)
From Medieval Latin olibanum, Late Latin libanus, from Latin oleum libani, from Ancient Greek λίβανος (líbanos, “frankincense (Boswellia carterii, now Boswellia sacra)”), from a Semitic source. See the Semitic root lbn لبن, meaning "white". See also (Biblical Hebrew, לְבוֹנָה (l'voná, “frankincense”), Arabic لبان (lubān, “frankincense”)). Compare benzoin.