/ˈstɪmjələs ||; ˈstɪmjələs/noun [C,U] (plural stimuli /-laɪ ||; -laɪ/) something that causes activity, development or interest 刺激物；刺激因素: Books provide children with ideas and a stimulus for play. 书籍赋予孩子们思想，对玩耍起刺激作用。