Ofer-hréfan

According to the Old English Dictionary:

ofer-hréfan

to roof over, cover with a roof, cover:--Ðé oferhréf ufan mid hwítle cover yourself over from above with a cloak, Lchdm. ii. 76, 22. Porticas ealle swíðe fægere oferhrýfde, Blickl. Homl. 125, 25. ofer-hrefan