An opener is a device or phrase that introduces something, such as a speech, book, or song. The crossword solutions for the term OPENER are KEY (3 letters), INTRO (5 letters), LEADIN (6 letters), SESAME (6 letters), PARTONE (7 letters), PASSKEY (7 letters), and RELEASE (7 letters). Each of these words can be used to describe an opener in some way. For example, KEY can refer to a KEY that unlocks something, INTRO can refer to an introduction, LEADIN can refer to a lead-in to something, SESAME can refer to the phrase 'open SESAME' which is used to open a door in the story of Ali Baba, PARTONE can refer to the first part of something, PASSKEY can refer to a KEY that allows access to something, and RELEASE can refer to the RELEASE of something.