Noun
dealt hand consisting of one 20-point card and six 1-point cards
Hanafudasee 手役
グロリアは断然その晩のピカ一の歌手であった。Gloria was easily the best singer of that evening. Noun which may take the genitive case particle 'no', Noun
outstanding; standing out above the rest
Also written ピカ一【ピカいち】、ぴか一【ぴかいち】