Definition of grub screw in English:

grub screw

Line breaks: grub screw

Entry from British & World English dictionary

noun

British
A small headless screw, used typically to attach a handle or cam to a spindle.

Definition of grub screw in:

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Word of the day animalcule
Pronunciation: ˌanəˈmalˌkyo͞ol
noun
a microscopic animal