Kenning--a picturesque metaphoric compound in Old English that stands for a simple noun.
 
 

Boat Bent-necked wood Ringed prow Foamy-necked Sea-wood Sea-farer Dragon  Twilight-spoiler Sword  Leavings of the file

Sea  Swan-road Whale-road  Battle  Storm of swords Queen  Peace-bringer among nations  Peace-weaver