a tropical palm tree (Acrocomia aculeata) native to South America, producing nuts and oil used for food and other purposes.
From Spanish or Portuguese, borrowed from indigenous languages of South America, the repetitive name mimicking the sound or appearance of the plant.
The name 'grugru' uses reduplication—repeating a syllable—which is common in words borrowed from languages where this pattern is standard, and it's why some tropical plant names sound playful to English speakers.
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