LINK / CITE ADD TO WORD LIST. noun. The definition of availability is whether someone or something can be accessed or used. An example of availability is when a classmate can meet to discuss a project on a certain date.
excuse - a defense of some offensive behavior or some failure to keep a promise etc.; he kept finding excuses to stay; every day he had a new alibi for not getting a job; his transparent self-justification was unacceptable
n. pl. alÂ·iÂ·bis. 1. Law. a. A form of defense whereby a defendant attempts to prove that he or she was elsewhere when the crime in question was committed. b. The fact of having been elsewhere when a crime in question was committed. 2. An explanation offered to avoid blame or justify action; an excuse.