ルリハコベalso: るりはこべルリハコベMeanings1nounscarlet pimpernelusually written using kana aloneA small annual plant with orange or blue flowers, often considered a weed. Scientific name: Anagallis arvensis. Usually written in katakana.道みち端ばたにルリハコベが咲さいていた。Scarlet pimpernels were blooming by the roadside.