ransom noun
VERB + RANSOM hold sb for/to, kidnap sb for She was kidnapped and held for ransom. (figurative) The company refused to be held to ransom by the union. | demand | pay
RANSOM + NOUN demand, note | money, payment
PREP. for ~ stealing cattle for ransom
You can also check other dicts: ransom (English, 中文解释 ), wordnet sense, Collins Definition