noun

• One who seeks.
• Especially, a religious seeker: a pilgrim, or one who aspires to enlightenment or salvation.
• In the sport of Quidditch or Muggle quidditch, a player who attempts to catch the snitch.
• (historical, Christianity) A member of an English Protestant dissenting group that emerged around the 1620s; they considered organised churches to be corrupt and preferred to wait for God's revelation.