The root system of an apple tree, or possibly a folk name for a plant believed to have medicinal properties similar to apples.
Compound of 'apple' (Old English 'appel') and 'root' (from Proto-Germanic 'wurt'). May also refer to a specific plant used in traditional medicine.
In folk medicine traditions, 'appleroot' might have referred to dug roots sold as remedies—showing how people named medicinal plants by association with more famous fruits to indicate their benefits!
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