past master
- a person who formerly held the position of master, as in a lodge or club
Origin:
for passed master
a person who has had long experience in some occupation, art, etc.; expert
See past master in American Heritage Dictionary 4
noun- One who has formerly held the position of master in an organization, especially a social one such as a lodge or club.
- One who is thoroughly experienced and skilled in a particular craft or activity.
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