grub screw
grub screw · grub screws
A headless set screwA headless set screw.
Meaning
1 sensesA headless set screw.
Origin
From a fancied resemblance to a grub (insect larva), both in appearance and in the way thaFrom a fancied resemblance to a grub (insect larva), both in appearance and in the way that it can go down a hole as if down into a burrow.
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