More on Horse-vetch from Infoplease:

• Horse-vetch - Horse-vetch The vetch which has pods shaped like a horse-shoe; sometimes called the ...
• Horse-chestnut - Horse-chestnut If a slip is cut off obliquely close to a joint, it will present a perfect miniature ...
• Dictionary of Phrase and Fable: H - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "H"