Brim-ceald

According to the Old English Dictionary:

-cald;

brim-ceald

adj. [brim, ceald cold] Cold as the water of the sea, ice-cold; frigidus ut aqua maris, frigidissimus, gelidus :-- Fénix brimcald beorgeþ the Phœnix tastes the ocean-cold [water], Exon. 57 b; Th. 205, 9; Ph. 110. Wæter wynsumu of ðære moldan tyrf brimcald brecaþ pleasant waters, sea-cold, break forth from the turf of the earth, 56 b; Th. 202, 9; Ph. 67. brim-ceald