Where does “spier” come from?

spier (Middle English) comes from Old English spīr, from Proto-Germanic spīrō — peak; summit; top.

Ancestry of “spier”, step by step

StepLanguageWordMeaning
1Old Englishspīrspire stalk of a plant
2Proto-Germanicspīrōpeak; summit; top
Every word from Proto-Germanic spīrō →Every word from Old English spīr →