The phrase "a major bomb" is correct and usable in written English.
It can be used to describe something that is significant or impactful, often in a negative context, such as a failure or a disaster.
Example: "The movie was expected to be a blockbuster, but it turned out to be a major bomb at the box office."
Alternatives: "a huge failure" or "a significant flop."
The Weather Underground was actually planning a major bomb attack at Fort Dix, N.J.
Garda Superintendent James Gallagher, who is leading the hunt for the driver and his accomplices, said: "The cooperation between the RUC and ourselves has certainly foiled a major bomb attack.
He and two others from the town were convicted and jailed for life for leading a major bomb conspiracy, known as Operation Crevice.
Thai authorities raised the death toll of a major bomb blast in central Bangkok to 22 people on Tuesday, as police searched for a suspect identified in security camera video.
Nigeria is hosting the World Economic Forum next week, and while the country's chairmanship was intended as a moment to celebrate its growing economic power, a major bomb blast in the capital and the kidnapping of more than 200 girls has shifted attention to the worsening security situation in the African nation.
For example the programme had some difficult phases in particular districts in Mumbai due to a major bomb blast in the metro and combing operations by the police.
With Israel still recovering from five suicide bombings in recent days, the military also said it had uncovered a major bomb-making operation in the West Bank city of Nablus and two large roadside bombs in the Gaza Strip that had been intended to destroy armored vehicles.
Dagan believed that Iran should be handled with covert action, not with a major bombing assault.
A major bombing campaign was going on in Vietnam and Kissinger announced that peace there was at hand.
Lebanon considers Israel, which carried out a major bombing campaign here during the 34-day war with Hezbollah in 2006, an enemy state.
But Israelis were angry today at an attack that ended almost four months without a major bombing inside Jerusalem, the capital.
