Emblematical of St. Catharine, who was put to death on a wheel somewhat resembling a chaff-cutter. St. Donatus bears a wheel set round with lights.
St. Euphemia and St. Willigis both carry wheels.
St. Quintin is sometimes represented with a broken wheel at his feet.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894
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