The idiom 'give a big hand' means to clap or applaud for someone. This video explains the meaning and use of the idiom 'give a big hand' in English. We explain how to use it with some easy examples to help you learn this idiom so you can use it in spoken and Business English.
If someone is given a big hand, they are introduced to the room with an expected round of applause showing gratitude for the presented person. This expression is almost always used in an introductory situation - a situation where someone is being introduced to an audience or crowd of some kind. This idiom can be used both formally and informally.