Wiktionary
cramponned
a. (context heraldry English) bent over at the ends
Usage examples of "cramponned".
Now the crack widens and the ice is too far back in it to be of use - but the cramponned boots can be stuck in the crack and turned sideways, to stick tenuously into the thin ice coating the crack's interior.
Between the arms of the cross were four golden cramponned crosses, turned forty-five degrees, so that a distance, they looked like X's within a golden circle.