What is "carob bean"

Carob \Car"ob\, n. [Cf. F. caroube fruit of the carob tree, Sp. garrobo, al-garrobo, carob tree, fr. Ar. kharr[=u]b, Per. Kharn[=u]b. Cf. Clgaroba.]

1. (Bot.) An evergreen leguminous tree ( Ceratania Siliqua) found in the countries bordering the Mediterranean; the St. John's bread; -- called also carob tree.

2. One of the long, sweet, succulent, pods of the carob tree, which are used as food for animals and sometimes eaten by man; -- called also St. John's bread, carob bean, and algaroba bean.

n. long pod containing small beans and sweetish edible pulp; used as animal feed and source of a chocolate substitute [syn: carob, algarroba bean, algarroba, locust bean, locust pod]