The term 'holding bay' refers to a designated area for storing or holding items, vehicles, or people temporarily. While there are several synonyms for holding bay, there are several antonyms as well. One antonym for holding bay is 'release area,' which means a location where things are let go or freed. Another antonym could be 'unloading zone' where instead of holding things, they are taken out of a vehicle or container. A third antonym could be 'departure gate,' which implies that things are leaving instead of staying. Overall, antonyms for holding bay suggest a sense of movement, release, and departure, unlike holding bay which implies containment and temporary storage.