The term 'Take AVOW of Silence' is a phrase that is used to describe a commitment to remain silent in order to protect a secret or to keep a promise. The crossword solution for this term is 'AVOW, ' which is a verb meaning to declare or affirm solemnly and formally as true. This phrase is often used in situations where someone has made a promise to keep something confidential and is making a commitment to uphold that promise.