Kinnerton Court Stone I 1
Image by thesweetcheat
Kinnerton Court Stone I

Calling morfe

nimble would have a similar meaning?

(but thimble doesn't, nevermind)

I'll get over to the library at some point today and see what it says in the OED.

It could be something to do with hiding. <i>Wimple</i> (as in a Nun's Wimpel) comes from the Indo-European root <i>wimb</i> which means veil or even banner. Perhaps it just looks like a wimple?

There are cognates that mean <i>crown</i> too, so could it be a 'royal' hill?