whisker: etymology in AHD4

[Mark Mandel]

Wondering whether "whisker" & "whisk broom" were related, I checked in the
American Heritage Dictionary 4ed (hardbound), and found this etymology
under  "whisker" (pasted from online
edition<http://education.yahoo.com/reference/dictionary/entry/whisker>,
which is the same):

ETYMOLOGY:
Middle English wisker, anything that wisks, from wisken, to whisk ; see
whisk

So the answer to my original question was Yes.

But "anything that wisks"? No entry for "wisk": it's a typo for "whisk".

Anyone here from Houghton Mifflin?

m a m

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