The message
from (Nick Maclaren) contains these words:
In article , Jaques d'Alltrades
writes:
| The message
| from "Franz Heymann" contains
these words:
|
| What's a frog in this context?
| The indentation moulded into one face of a brick is known as the
frog. I
| have no idea why.
|
| Probably from a similar-shaped indentation under a horse's hoof.

Which is not what the OED says. I agree with you, and think that
the OED is wrong.

I went right off the OED when it started including ephemeral words -
sort of M$ philosophy - built-in obsolibrance.

--
Rusty Hinge http://www.users.zetnet.co.uk/hi-fi/tqt.htm

Dark thoughts about the Wumpus concerto played with piano,
iron bar and two sledge hammers. (Wumpus, 15/11/03)