Joel means in the bible: One of the prophets of Judah. His prophecy date is not known. It may have occurred before the reign of Joash (before 850 B.C.) or after the Return. It was the result of severe drought and locust infestation. The prophet assures people they’ll receive God’s blessings if they repent. Peter quoted his prophecy about the outpouring Spirit (2:28-32) on the Day of Pentecost Acts 2:27, while Joseph Smith (JS–H 1) quoted the Angel Moroni. There is also a trace of Joel in Revelation.
(in Bible Dictionary)