AT: "xx" A hangar was a facility for storing aircraft in the 20th century. Such facilities were also used for storing shuttlecraft and starships in the 23rd and 24th centuries.
History
In 2258 of the alternate reality, cadets were ordered to report to Hangar 1 in San Francisco near Starfleet Academy. (Star Trek)
Several hangars were located aboard the USS Enterprise-D. In 2366, hangars 1, 2, 3, 4, and 5 were listed on LCARS displays for shuttlebay operations. (TNG: "Evolution")
Intrepid-class starships had a large hangar located behind the main shuttlebay. Aboard the USS Voyager, this hangar was commonly referred to as Shuttlebay 2. (VOY: "In the Flesh", "Body and Soul")
Hangar 1 in San Francisco
A hangar on Phylos for the Phylosian fleet
Hangars listed on the shuttlebay operations display
Hangars listed on the shuttlebay operations display
Class 2 shuttles in Voyager's hangar
The Delta Flyer under construction in Voyager's hangar
Irina's ship and the Delta Flyer II in Voyager's hangar