yeoman
yeo*man
noun
{bc}an attendant or officer in a royal or noble household
yeoman of the guard
noun phrase
{bc}a member of a military corps attached to the British royal household that serves as ceremonial attendants of the sovereign
yeoman warder
noun
{bc}{sx|beefeater||2}
yeoman's/yeoman work/service
idiom
{bc}very good, hard, and valuable work that someone does especially to support a cause, to help a team, etc.