behelm

verb2

1. •
   To cover; cover over.

   • And hundred-folded Briareus, and Lerna's Worm of dread Fell hissing; and Chimaera's length and fire-behelmed head, [...] — 1876
2. •
   To cover as with a helm or helmet.

   • Stepped forth a virgin, with behelmed head Like to a martial goddess, fair at once And dreadful to behold; [...] — 1985