sentencesentencesentences1noun1a group of words that tells you something or asks a question. When a sentence is written, it always begins with a capital letter and usually ends with a full stop: You don't need to write a long letter. A couple of sentences will be enough.2the punishment that a judge gives to somebody in a court of law: 20 years in prison was a very harsh sentence.sentencesentencesentencessentencedsentencing2verb (sentences, sentencing, sentenced)to tell somebody in a court of law what their punishment will be: The judge sentenced the man to two years in prison.