Potatoes, especially when referred to informally or casually.
Originally from 'spud,' which may derive from Middle Dutch 'spudde' (a digging tool). By the 1800s, 'spud' became slang for potatoes, probably because of the tool used to harvest them.
Irish immigrants brought potatoes to America and the slang term 'spuds' with them in the 1800s—it became so common that many people don't realize it's originally Irish slang! It's one of the few foods named after the tool that harvests it.
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