Baciyelmo, Sancho's word joining bacía, the barber's basin, and yelmo, helmet. It appears only once, in chapter XLIV of Part One: the owner of the basin says the piece is a basin, the gentleman swears it is the helmet, and Sancho calls it baciyelmo. In the next chapter the village barber joins the joke and says it is neither a basin nor a whole helmet, and the priest pays eight reales for the basin.
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