Danegeld
/ˈdeɪngeld/noun
mass noun
1- historical a land tax levied in Anglo-Saxon England during the reign of King Ethelred to raise funds for protection against Danish invaders〈史〉抗丹税（盎格鲁-撒克逊时代埃塞雷德国王统治时期在英格兰征收的抗丹麦入侵税）。
1.1
- taxes collected for national defence by the Norman kings until 1162（1162年之前诺曼王朝各国王征收的）国防税。
词源
late Old English, from Old Norse Danir 'Danes' + gjald 'payment'.