spire (n.)youdaoicibaDictYouDict[spire 词源字典]
Old English spir "a sprout, shoot, spike, blade, tapering stalk of grass," from Proto-Germanic *spiraz (cognates: Old Norse spira "a stalk, slender tree," Dutch spier "shoot, blade of grass," Middle Low German spir "a small point or top"), from PIE *spei- "sharp point" (see spike (n.1)). Meaning "tapering top of a tower or steeple" first recorded 1590s (a sense attested in Middle Low German since late 14c. and also found in the Scandinavian cognates).[spire etymology, spire origin, 英语词源]
spire (v.)youdaoicibaDictYouDict
early 14c., "send up shoots," from spire (n.). Related: Spired; spiring.