Carob, Ceratonia siliqua, is identified as both husk and locust in the Bible.
John the Baptist ate locust and wild honey (Matthew 3:4), although this is often interpreted to be insects.
The prodigal son was feeding husk to swine (Luke 15:6), which I was led to believe were corn (maize) shucks even though maize was not known in the Old World until after the voyages of Columbus.
The seeds of carob were the original standard for a caret weight.
