nEserine(Chem) An alkaloid found in the Calabar bean, and the seed of Physostigma venenosum; physostigmine. It is used in ophthalmic surgery for its effect in contracting the pupil.
Century Dictionary and Cyclopedia
neserineAn alkaloid obtained from the Calabar bean, Physostigma venenosum, assumed by some authorities to be identical with physostigmine. It forms colorless bitter crystals, which are an active poison; applied to the conjunctiva, it produces contraction of the pupil.
Webster's Revised Unabridged Dictionary
From native name of the Calabar bean: cf. F. ésérine,
Accurate reports are usually obtained more quickly by means of convex glasses or eserine.