n. kana printed next to or above a kanji or other characters to indicate their pronunciation:
Word Usage
"The updates section of xxxHolic‘s site (scroll to 2010/1/18) says it’s “Kaza Nagi” 「風(かざ)なぎ」 – I haven’t learned the kanji 風 in my Japanese class yet, so I dunno if the furigana is a typo or what."