One who does not break the commandment which prohibits the making of the likeness of any thing in heaven or earth, or in the waters under the earth.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
Religious Horse * the RelishNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes