any of several spiny-trunked, tropical feather palms, as Acrocomia totai, of tropical America, having a swollen trunk with rings of blackish spines.
Also called grugru grub, grugru worm . the larva of any of several South American billbugs, as Rhynchophorus cruentatus, that feeds on the pith of palm trees, sugarcane, etc., and is sometimes prized as food.
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British Dictionary definitions for grugru
any of several tropical American palms, esp Acrocomia sclerocarpa, which has a spiny trunk and leaves and edible nuts
the large edible wormlike larva of a weevil, Rhynchophorus palmarum, that infests this palm
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012