Collins COBUILD Advanced Learner's English Dictionary - am

(AMs) An AM is a member of the Welsh Assembly. AM is an abbreviation for ‘assembly member’. N-COUNT AM Am is the first person singular of the present tense of be. Am is often shortened to ’m in spoken English. The negative forms are ‘I am not’ and ‘I’m not’. In questions and tags in spoken English, these are usually changed to ‘aren’t I’.