pickcost a bomb . cost a bomb or an arm and a leg {v. phr.} To be extremely expensive. My new house has cost us an arm and a leg and we're almost broke. Categories: add yours verb Source: A Dictionary of American Idioms 'cost a bomb' on video Easy-peasy British English – Idioms Ep. 3 – ‘Cost a bomb’ It cost a bomb [expression/examples] Why These Expensive Restaurants Cost a Bomb How to Pronounce and Use the British English Expression, Cost a Bomb sort: relevance, mode: exact match, q: "cost a bomb", maxResults: 4, videoEmbeddable: true, videoSyndicated: true, safeSearch: strict, type: video Subscribe to: American IdiomsEnglish Slang Discuss