1.nouns which may take the genitive case particle 'no'; noun (common) (futsuumeishi)
first; foremost; number one
2.nouns which may take the genitive case particle 'no'; noun (common) (futsuumeishi)
most important
3.nouns which may take the genitive case particle 'no'; noun (common) (futsuumeishi)
best; greatest; most
4.adverb (fukushi)
above all; besides; in any case; to begin with