a screw turned by means of an axial hexagonal hole in its head.
screw the pooch
We recommend not being too literal with this one.
Wanna Get Away? 9 Synonyms For Screwing Up
We’ve all had moments where we’ve really and truly screwed something up. An epic mistake (OK, maybe not on a historic, global scale like the February 26, 2017 Oscars). But still, we’re human, and mistakes do happen. There are a lot of words to describe things going south in a hurry. We’ve gathered a few here. You’ll notice they’re all very close in definition. Maybe …
Origin of Allen screw
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019