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yeoman

1 ENTRIES FOUND:
yeoman /ˈjoʊmən/ noun
plural yeomen
yeoman
/ˈjoʊmən/
noun
plural yeomen
Britannica Dictionary definition of YEOMAN
[count]
: an officer in the U.S. Navy who works as a clerk
: a farmer in the past who owned a small amount of land

yeoman's work/service

US also yeoman work/service
: very good, hard, and valuable work that someone does especially to support a cause, to help a team, etc.