Fyrn-geweorc

According to the Old English Dictionary:

es;

fyrn-geweorc

n. An ancient work; priscum vel jam diu perfectum ŏpus :-- Ǽr ðon endige fród fyrngeweorc before his wise ancient work shall end, Exon. 57 a; Th. 203, 14; Ph. 48: 57 a; Th. 204, 9; Ph. 95: Andr. Kmbl. 1473; An. 738. Freá sceáwode fyra fyrngeweorc the lord beheld the ancient work of men, Beo. Th. 4561; B. 2286. fyrn-geweorc