Vocabulary What does へそ (heso) mean? へそ means navel, belly button; center point. Quick factsReadingへそRomajihesoLevel (estimated, JLPT framework)N2 へそへそN2 · estimated, JLPT frameworkhesonavel, belly button; center pointExample sentencesお腹(なか)が冷(ひ)えてへそが痛(いた)い。My stomach got cold and my belly button hurts.赤(あか)ちゃんのへそはかわいい。The baby's belly button is cute.