a wild plant with heart-shaped leaves that are covered in hairs that sting (= cause a painful reaction when touched)

stinging nettles 刺人的荨麻

nettle soup/tea 荨麻汤／茶

to make someone annoyed or slightly angry

She looked up at me sharply, clearly nettled by the interruption. 她抬起头狠狠地瞪着我，显然是被我插话打断她的举动激怒了。