(1) Short for Google Chrome browser.
(2) Short for Google Chrome operating system.

See Google Chrome: From Browser to Operating System" in the Did You Know...? section of Webopedia.
See also "All About Web Browsers" in the Quick Reference section of Webopedia.

Webopedia's "Did You Know...?" Section
Use this Webopedia knowledge section for an in-depth overview of specific technologies and occurrences in the areas of Computer Science, The Internet, and Computer Hardware and Software.

Webopedia's Quick Reference Section
Use this Webopedia reference section for information on common Internet and computer facts and occurrences.