辞海 (cí hǎi) is the Chinese term for a dictionary of Chinese characters and phrases. In English, it would be called a "Chinese dictionary". The word 辞海 is made up of the two characters 辞 (cí), which means "words" or "phrases", and 海 (hǎi), which means "sea". So, the term 辞海 literally means "sea of words" or "sea of phrases".
