beam verb definition in Facial expressions topic from the Oxford Advanced Learner's Dictionary

beam

 verb: Facial expressions topic
[intransitive, transitive, no passive] to have a big happy smile on your face beam (at somebody) He beamed at the journalists. beam (with something) She was positively beaming with pleasure. beam something (at somebody) The barman beamed a warm smile at her. His broad face beamed a hearty welcome. ‘I'd love to come,’ she beamed (= said with a large smile).