We don’t hear much about barrows in the 21st century, which is no doubt why the folks having this garage sale listed a wheel barrel for sale.
I’m still not sure what a wheel barrel would look like. Perhaps a garbage can with wheels?
What they meant was wheelbarrow, a combination of wheel (you know what that is) and barrow (a type of hand truck).
Oh, and that “2 year old Lawnboy” mentioned in the ad. The correct form is 2-year-old Lawn-Boy. Note the hyphens in the adjective and the name. In a classified ad, that kind of mistake is understandable. If we were writing a story, though, we’d look look up the name and the style.