Eau de Naphre, Eau le Naphe, Fr.; Aqua naphæ, L. This article is distilled in Languedoc from the leaves of the bigarade, or bitter-orange tree, but the preparation sold in England under this name is often prepared as follows: —Orange flowers, 7 lbs.; fresh yellow peel of the bigarade or Seville orange, […]
Source: wiktionary