The word "cochlear" in the Thayer site is said to mean both screw and snail. The Greeks had olive oil and wine presses
based on a wooden screw by 100 BC. But metal screws did not appear until the 1500s. I first heard the word describing the structure in the inner ear, which does look like a smail with conical helix. I couldn't find any pictures of the wine or oil presses, but I suppose they looked something like the first printing presses.
I used to wonder if the snail shell inspired the invention of the screw as a boring tool, an auger.