Used in direct address to peers of the realm, usually now excluding dukes and the Lords Spiritual.
Used in direct address to the Lord Mayors of certain important cities, including London and Canterbury.
Used in direct address to bishops, particularly Anglican ones.
Used in direct address to certain judges, particularly High Court Judges and above.
To attempt to slow (an animal) by crying "whoa".
An expression of surprise.
Stop (especially when commanding a horse or imitative thereof); calm down; slow down.
Used as a meaningless filler in song lyrics.