bay3

noun

• 1a space created by a window line projecting outwards from a wall.
• a section of wall between two buttresses or columns, especially in the nave of a church.

• 2 [with modifier] a compartment with a specified function in a vehicle, aircraft, or ship:a bomb bay
• an area specially allocated or marked off:a loading bay
• (also bay platform) British a short terminal platform at a railway station also having through lines.