the top edge of a cup, bowl, glass, etc. （杯、碗等容器的）边，边沿 two wine glasses, filled to the brim 两只斟满的酒杯 - (figurative)
She felt suddenly alive and full to the brim with enthusiasm. 她突然觉得充满了热情。
Oxford Collocations Dictionaryphrases- full to the brim
- fill something to the brim
the flat edge around the bottom of a hat that sticks out 帽檐 
She watched the crowd from beneath the brim of her hat. 她从帽檐下注视着人群。 a straw hat with a wide brim 宽帽檐草帽
Oxford Collocations Dictionaryadjective- broad
- deep
- wide
- …
- beneath a/the brim
- under a/the brim
- -brimmed
(in adjectives 构成形容词 having the type of brim mentioned 有…边的 a wide-brimmed hat 宽檐帽
Word OriginMiddle English (denoting the edge of the sea or other body of water): perhaps related to German Bräme ‘trimming’.