grub

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grub:

see larvalarva,
independent, immature animal that undergoes a profound change, or metamorphosis, to assume the typical adult form. Larvae occur in almost all of the animal phyla; because most are tiny or microscopic, they are rarely seen. They play diverse roles in the lives of animals.
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grub

[grəb]
(invertebrate zoology)
The larva of certain insects; commonly used in reference to beetles.

grub

To clear a site by removing roots, stumps, and the like.

grub

the short legless larva of certain insects, esp beetles

GRUB

(GRand Unified Bootloader) A program that calls a Unix/Linux operating system into memory. Officially GNU GRUB, GRUB is a popular boot loader due to its flexibility and configuration capabilities, allowing changes to be made at boot time and support for boot images from the network. See GNU and boot loader.