Search the Dictionary

A district on the west coast of Africa. Calabar bean, The of a climbing legumious plant (Physostigma venenosum), a native of tropical Africa. It is highly poisonous. It is used to produce contraction of the pupil of the eye; also in tetanus, neuralgia, and rheumatic diseases; -- called also ordeal bean, being used by t…

An alkaloid resembing physostigmine and occurring with it in the calabar bean.

A small lemuroid mammal (Arctocebus Calabarensis) of Africa. It has only a rudimentary tail.

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.

Producing myosis, or contraction of the pupil of the eye, as opium, calabar bean, etc. -- n.

Any severe trial, or test; a painful experience. Ordeal bean. (Bot.) See Calabar bean, under Calabar. -- Ordeal root (Bot.) the root of a species of Strychnos growing in West Africa, used, like the ordeal bean, in trials for witchcraft. -- Ordeal tree (Bot.), a poisonous tree of Madagascar (Tanghinia, or Cerbera, ven…

An alkaloid found in the Calabar bean (the seed of Physostigma venenosum), and extracted as a white, tasteless, substance, amorphous or crystalline; -- formerly called eserine, with which it was regarded as identical.