Easton's Bible Dictionary (1897)/Corn
Corn : The word so rendered (dagan) in Gen. 27:28, 37, Num. 18:27, Deut. 28:51, Lam. 2:12, is a general term representing all the commodities we usually describe by the words corn, grain, seeds, peas, beans. With this corresponds the use of the word in John 12:24.
In Gen. 41:35, 49, Prov. 11:26, Joel 2:24 ("wheat"), the word thus translated (bar; i.e., "winnowed") means corn purified from chaff. With this corresponds the use of the word in the New Testament (Matt. 3:12; Luke 3:17; Acts 7:12). In Ps. 65:13 it means "growing corn."
In Gen. 42:1, 2, 19, Josh. 9:14, Neh. 10:31 ("victuals"), the word (sheber; i.e., "broken," i.e., grist) denotes generally victuals, provisions, and corn as a principal article of food.
From the time of Solomon, corn began to be exported from Palestine (Ezek. 27:17; Amos 8:5). "Plenty of corn" was a part of Issac's blessing conferred upon Jacob (Gen. 27:28; comp. Ps. 65:13).