Noun
One who explains; an expounder or expositor; a commentator; an interpreter.
Source: Webster's dictionaryBeing is the great explainer. Henry David Thoreau
Yes, in my books I do edit myself to keep from becoming the Village Explainer. Thomas Perry
And there is also a video explainer of the EU’s seven-year budget. Source: Internet
From behind-the-scene videos to explainer videos, how-to videos to unboxing videos, infomercials to breaking news, and everything else in between, people are really consuming videos at incredible rates. Source: Internet
Here's a quick explainer of what car engine valves do and why carmakers spend so much time telling you how great theirs are. Source: Internet
I don't want to spoil Tom Scott's excellent four-minute explainer, but will point out that you'll get a visceral taste of the problem about 16 seconds in. Source: Internet