PIE *plōtus etymology

Ok, thanks for the input. Hopefully others will try to figure that out then. I wonder then why the AHD of IE Roots would allow that etymology in then? I had always understood it to be very reliable. Also, thank you for helping me in these early days of my Wiktionary editing.

Etymological dictionaries are often collections of information from various sources. They don't necessarily do any in-depth researching themselves, and may not have the know-how to judge them all. It's also possible that they just made mistakes or missed things, though. They're still human...