吉きっ兆ちょう

noun, noun which may take the genitive case particle 'no'

lucky omen; good omen

Refers to a sign or event believed to foretell good fortune. Often used in formal or literary contexts, but also in everyday speech about auspicious signs.

• 初はつ夢ゆめに富ふ士じ山さんを見みるのは吉きっ兆ちょうとされている。

  Seeing Mount Fuji in one's first dream of the year is considered a lucky omen.

• 虹にじが出でるのは吉きっ兆ちょうのしるしだと言いわれる。

  A rainbow is said to be a sign of good luck.