useless trivia: What Word Means: Snibs - Snubs - Checks?

Questions

What was a large cask with a lidded opening, used to hold day's supply of drinking water for a ship's crewmen?

What was a reeve in a shire?

What was a sheriff during feudal rule in england?

What was a symbol of welcome in the 1700's to 1800's and can often be seen on doorknockers today?

What was abolished by the english parliament in 1647?