The term 'New Wing' can be broken down into three crossword solutions: ANNEX (5 letters), ELL (3 letters), and ADDON (5 letters). An ANNEX is an addition to a building, usually connected to the main structure. An ELL is a wing of a house that extends from the main building at a right angle. An addon is an additional component or feature added to an existing product or system. All three terms refer to an extension or addition to an existing structure.