1 a: a way of exit or entrance : a road, path, channel, or course by which something passes b: a corridor or lobby giving access to the different rooms or parts of a building or apartment 2 a: the action or process of passing from one place, condition, or stage to another b:death 1a c: a continuous movement or flow <the passage of time> 3 a (1): a specific act of traveling or passing especially by sea or air (2): a privilege of conveyance as a passenger :accommodationsb: the passing of a legislative measure or law :enactment 4: a right, liberty, or permission to pass 5 a: something that happens or is done :incidentb: something that takes place between two persons mutually 6 a: a usually brief portion of a written work or speech that is relevant to a point under discussion or noteworthy for content or style b: a phrase or short section of a musical composition c: a detail of a work of art (as a painting) 7: the act or action of passing something or undergoing a passing 8: incubation of a pathogen (as a virus) in culture, a living organism, or a developing egg