noun: (astronomy) Initialism of soft gamma-ray repeater or soft gamma repeater.
noun: (East Africa) Initialism of standard gauge railway.
noun: (astronomy) Abbreviation of Sagittarius. (the modern IAU constellation) [(astronomy) A constellation of the zodiac supposedly shaped like a centaur who is an archer.]
noun: (astronomy) Abbreviation of Sagittarii. (the genitive form of the IAU constellation Sagittarius)
