hotline noun
ADJ. 24-hour | information, technical support, ticket | credit card | telephone
VERB + HOTLINE call, dial, phone, ring Dial our 24-hour hotline to find out if you have won a prize. | establish, set up A telephone hotline has been set up to give information about the changed train services. | operate, run The company will be operating an information hotline that customers can call if they are worried about products.
You can also check other dicts: hotline (English, 中文解释 ), wordnet sense, Collins Definition