Patchouli (also patchouly or pachouli) is both a plant and an essential oil (paatchouli oil) obtained from the leaves of a plant of the same name. The scent of patchouli is heavy and strong. It has been used for centuries in perfumes, and is grown in the East and West Indies. The word derives from the Tamil patchai பச்சை (green), ellai இலை (leaf).