Where does “spyn” come from?

spyn (Middle English) comes from Old French espine, from Latin spīna, from Proto-Italic speinā, from Proto-Indo-European spēy- — to stretch; thrive; succeed.

Ancestry of “spyn”, step by step

spyn traces back through two separate lines of ancestry.

via Old French espine

StepLanguageWordMeaning
1Old Frenchespinespine; backbone; spine; spike
2Latinspīnaa thorn or a thorny tree or shrub, such as whitethorn, hawthorn, or blackthorn
3Proto-Italicspeināthorn
4Proto-Indo-Europeanspēy-to stretch; thrive; succeed

via Old English spinnan

StepLanguageWordMeaning
1Old Englishspinnanto spin
2Proto-Germanicspinnanąto spin
3Proto-Indo-European(s)pénh₁-ne-—
4Proto-Indo-European(s)penh₁-to twist; to weave
Every word from Proto-Indo-European spēy- →Every word from Proto-Italic speinā →Every word from Latin spīna →