ˈteaser ad noun [countableC] an advertisement that is used to make people interested in a product, but that does not give very much information about the product, so that people will pay attention to more advertisements later 前导广告,预热广告〔引起人们对产品的兴趣,但不会给予过多信息的广告,以此吸引人们注意其后推出的更多广告〕