More on Lucky Stone from Infoplease:

• Lucky Stone - Lucky Stone (A). A stone with a hole through it. (See Lucky Penny.) Source: Dictionary of Phrase ...
• month - month month, in chronology, the conventional period of a lunation, i.e., passage of the moon ...
• Dictionary of Phrase and Fable: L - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "L"