potato: [16] Potato was originally the English name for the ‘sweet potato’ (when Falstaff in Shakespeare’s Merry Wives of Windsor 1598 cried ‘Let the sky rain potatoes!’ it was to the sweet potato, and its supposed aphrodisiac properties, that he was referring). It did not begin to be used for the vegetable we now know as the potato until the very end of the 16th century. The word comes via Spanish patata from batata, the name for the ‘sweet potato’ in the Taino language of Haiti and other Caribbean islands.
