What does BOS stand for?

Airboss of America - Toronto Stock Exchange symbol (SPSG)

Background Operating System - Computer science (UWER)

Back-Off Sub (SAUS)

Back-Off System

Back of Slip (UWER)

Back Order and Selection

Backup Operating System (NASA)

Balance of State - Department of Labor

Balance-of-System - Power plant efficiency

Bank of Scotland

Bank of Singapore

Bank of Spain

Base of Skull - Medicine (RAWO)

Base Operating Service - Contract - DoD

Base Operating Supplies

Base Operating Support (AFM)

Base Operating System (SAUS)

Basic Oblate Spheroid

Basic Operating System - IBM Corp. - Computer science

Basic Oxygen Steel - Steelmaking

Batch Operating System - Computer science

Battalion Orderly Sergeant - British and Canadian

Battlefield Operating System - Military

Battlefield Operations Systems (SAUS)

Begin of String (VLIE)

Behavioral Observation Scale for Autism - Medicine (DB)

Bell Operating System - Telecommunications (TEL)

Bell Oscillator Speed - Automotive manufacturing

Best Opposite Sex (to Best of Breed) - Dog show term

Bicycles on Stamps - Study unit - American Topical Association (EA)

Big Orange Switch (SAUS)

Bit Organized Storage (VLIE)

Bit Organized Store (SAUS)

Bit-Oriented Signaling - Communications term (DCT)

Blanket Order System (XSAL)

Blended Old Scotch - Whiskey (ROG)

Boise Creek Resources - Vancouver Stock Exchange symbol

Book Order and Selection - Computer science

Book Order System - Computer science (NITA)

Bookseller's Order Service - For-profit subsidiary of American Booksellers Association - Defunct

Bosal International Management NV - Belgium - ICAO designator (FAAC)

Boselewa - Language code (ETLW)

Bosnian - GeoNet three-character language code (GEON)

Bosque Alegre - Argentina - Seismograph station code, US Geological Survey - Closed (SEIS)

Boss & Co. - NCIC firearms make code (NCIC)

Boston - Telegraphy (PCTE)

Boston - Massachusetts - Airport symbol

Boston Celtics L.P. - NYSE symbol

Boston-South Station, MA - Amtrak rail station code

Boston University, Boston, MA - OCLC symbol (OCLC)

Bottom Of Stack (SAUS)

Boyfriend over Shoulder - Internet lingo

Brassboard Optical Seeker (ACAE)

Breed of Sire

Brewer Ozone Spectrophotometer (UWER)

Bright Object Sensor (MCD)

British Oil Shipping (SAUO)

British Origami Society

British Orthodontics Society (SAUO)

British Orthoptic Society

Building Out Section

Bundle of Sticks (UWER)

Business and Office Systems

Business Office Supervisor - Telecommunications (TEL)

Business Operating System (VLIE)

General Edward Lawrence Logan International Airport - FAA (TAG)

- The Boat Shop, Agana, GU - Manufacturer code for watercraft hull identification number (USCG)

Boston Patriots - National Football League - 1960-70 (NFLA)

Bosworth's New York Superior Court Reports - A publication (DLA)