eight trigrams; bagua
Refers to the eight divinatory trigrams of the I Ching (易経). Used in traditional Chinese-derived cosmology and fortune-telling.
八卦は易経の基本となる八つの図形です。
The bagua are the eight fundamental figures of the I Ching.
By extension, refers to fortune-telling or divination in general, often using the eight trigrams. Common in set phrases like 八卦見 (はっけみ, fortune-teller).
彼は八卦で運勢を占ってもらった。
He had his fortune told using the eight trigrams.
Standard kanji spelling for the eight trigrams and divination.
From Chinese 八卦 (bāguà), literally 'eight divinatory symbols'. The reading はっけ is the regular Sino-Japanese on'yomi; はっか is a less common variant.