はるとらお 春虎の尾 LinksSentence search for 春虎の尾Sentence search for はるとらのおSentence search for 春虎尾Kanji details for 春, 虎 and 尾Edit in JMdict Noun1. Polygonum tenuicaule (species of knotweed)Other forms春虎尾 【はるとらのお】 Discussions Log in to talk about this word.