The author uses this word figuratively here, comparing problems of everyday life such as friendship and love, marriage and divorce, which she addresses in this story, to nettles, which from time to time irritate or annoy you.
In Munro stories, as in Chekov's, plot is secondary and "little happens." As with Chekov, Garan Holcombe notes: "All is based on the epiphanic moment, the sudden enlightenment, the concise, subtle, revelatory(启示性的, 预示性的 ) detail." Munro's work deals with "love and work, and the failings of both. She shares Chekov‘s obsession with time and our much-lamented inability to delay or prevent its relentless movement forward.― Alice Munro, Fiction, ―Nettles,‖ The New Yorker, February 21, 2000, p. 254
Works by Alice Munro