A male forefather.
A father of someone's parent.
The archived older version of a file that immediately preceded the father file.
To retain discontinued laws or rules for (a thing, person or organization previously affected by them).
To be, or act as, a grandfather to.
A man of a higher rank or position.
to a teacher.
to a knight or other low member of the peerage.
to a superior military officer.
A respectful term of address to a man of higher rank or position
A respectful term of address to an adult male (often older), especially if his name or proper title is unknown.
To address (someone) using "sir".