Definify.com
Webster 1913 Edition
Eserine
Es′er-ine
(?; 104)
, Noun.
[From native name of the Calabar bean: cf. F.
ésérine
.] (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.