Collins COBUILD Advanced Learner's English Dictionary - molehill

(molehills) 1. A molehill is a small pile of earth made by a mole digging a tunnel. N-COUNT 2. If you say that someone is making a mountain out of a molehill, you are critical of them for making an unimportant fact or difficulty seem like a serious one. The British press, making a mountain out of a molehill, precipitated an unnecessary economic crisis. PHRASE: V and Ns inflect c darkgreen]disapproval