a substance that causes slight inflammation or other discomfort to the body 刺激物;刺激剂 ■(figurative)a thing that is continually annoying or distracting (喻)刺激;心头之痛;眼中钉 in 1966 Vietnam was becoming an irritant to the government. 1966年越南成了政府的心头之痛。
adjective
causing slight inflammation or other discomfort to the body 会引起发炎的;有刺激性的