a reference resource which provides information about words and their meanings, uses, and pronunciations. A dictionary may be published as a printed book, or as a digital product such as a website or app, and it may be monolingual, bilingual, or multilingual. 词典;字典
a book, website or other resource which deals with a particular subject, providing the words, phrases, and terms used in that field, with information about their meaning and use (某个科目的)专业词典,术语大全