Dictionary.net

• An artificial oil of hitter almonds, used for scenting soaps and flavouring confections. The essence of mirbane, a mixture of benzoic and nitric acid.

1914 - Nuttall's Standard dictionary of the English language
By Nuttall, P.Austin.

• m[.e]r'b[=a]n, n. nitro-benzol. [See NITRE.]

1908 - Chambers's Twentieth Century Dictionary of the English Language
By Thomas Davidson