Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
long-spurred is an adjective meaning "of flowers having a long extension at the base of the corolla". It carries one recorded sense.
of flowers having a long extension at the base of the corolla
Definitions, synonyms and semantic relations for long-spurred come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. .