The term 'FLOCK LEADER' can be defined by four different crossword solutions: PRIEST (6 letters), PASTOR (6 letters), RAM (3 letters), and PREACHER (8 letters). A BELLWETHER (10 letters) is also a type of flock leader. A PRIEST is a religious leader in the Christian faith, while a PASTOR is a minister or PRIEST in charge of a church. A RAM is a male sheep that leads the flock, while a PREACHER is someone who delivers sermons. Finally, a BELLWETHER is a person or thing that takes the lead in a trend or activity.