kigo refers to a seasonal word or phrase used in traditional Japanese poetry, particularly in haiku. It helps to evoke a specific time of year and connects the poem to nature and the changing seasons. Each kigo is associated with particular imagery and emotions, enhancing the reader's experience. In haiku, kigo serves as a marker that indicates the season in which the poem is set. For example, words like "cherry blossoms" signify spring, while "snow" suggests winter. This seasonal reference enriches the poem's meaning and allows readers to appreciate the beauty of nature throughout the year.