Definition of spinach
1
: an Asian herb (Spinacia oleracea) of the goosefoot family cultivated for its edible leaves which form in a dense basal rosette
also
: its leaves
2a
: something unwanted, pretentious, or spurious
b
: an untidy overgrowth
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Merriam-Webster unabridged
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Time Traveler for spinach
The first known use of spinach was in the 15th century
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