of, relating to, or characterizing Methodism, esp in its original form or as upheld by the branch of the Methodist Church known as the Wesleyan Methodists
—n
3.
a follower of John Wesley
4.
a member of the Methodist Church or (formerly) of the Wesleyan Methodists
"pertaining to Wesley," 1771, in ref. to John Wesley (1703-91), founder of Methodism. The surname is from various places in England named West Leigh (or some variant).