green tag
n.— «Those renewable electrons flow onto the grid, and Green Mountain gives FPL what’s known as a “green tag”—a certificate that shows part of its electricity has been offset by alternative energy.» —“Green power used in solar project” by Kristi E. Swartz in Tequesta Palm Beach Post (Florida) May 21, 2007. (source: Double-Tongued Dictionary)
Further reading
What’s the best way for someone busy to learn lots of new words quickly for a test like the GRE? Looking up their origins can help. Or, record yourself reading the words and definitions and play them back while you’re doing other chores...
Decisions by dictionary editors, wacky wordplay, and Walt Whitman’s soaring verse. How do lexicographers decide which historical figures deserve a mention or perhaps even an illustration in the dictionary? The answer changes with the times. •...