succus
Suc"cus, n.; pl. Succi (. (Med.) Defn: The expressed juice of a plant, for medicinal use. Succus entericus (. Etym: [NL., literally, juice of the intestines.] (Physiol.) A fluid secreted in small by certain glands (probably the glands of Lieberkühn) of the small intestines. Its exact action is somewhat doubtful.