The meaning of the Acronym GLS is...

GLS is

• Greater Light Stone
• Got Lots of Shit
• Greatest Load of Shit

More Meanings For GLS:

• Datafile (Across)
• Greater Light Stone
• Got Lots of Shit
• Greatest Load of Shit
• Gamboa, Lagman, and Sarte (educational center)
• Great Lake Savants
• Genetic Local Search
• Government Legal Service
• Greater London Staff
• General Line School
• Ground Launch Sequence (Sequencer)
• Gear Lubricant Special
• Scholes Field, Galveston, Texas USA
• Generalized Least Squares

GLS is also in:

• Airport Codes
• Chat
• File Extensions
• Firms
• General
• Human Genome
• Language Codes (3 Letters)
• Military
• NASA
• Science Fiction
• Transportation
• Universities