Where does “collar” come from?

collar (Old Portuguese) comes from Latin cochlear, from Latin cochlea, from Ancient Greek κοχλίας, from Ancient Greek κόχλος — shellfish with a spiral shell, used for dyeing...

Ancestry of “collar”, step by step

Step	Language	Word	Meaning
1	Latin	cochlear	a spoon; a spoonful
2	Latin	cochlea	snail; snail shell; spiral
3	Ancient Greek	κοχλίας	snail with a spiral-shell; spiral; spiral, snail...
4	Ancient Greek	κόχλος	shellfish with a spiral shell, used for dyeing...

Every word from Ancient Greek κόχλος →Every word from Ancient Greek κοχλίας →Every word from Latin cochlea →