Meaning

noun a verbalization that encourages you to attempt something

noun any sharply pointed projection

noun tubular extension at the base of the corolla in some flowers

originFrom Middle English spure, spore, from Old English spora, spura, from Proto-West Germanic *spurō, from Proto-Germanic *spurô, from Proto-Indo-European *sperH- (“to kick”).

Etymology from Wiktionary, CC BY-SA 3.0