Definitions for danegelt
an annual tax formerly laid on the English nation to buy off the ravages of Danish invaders, or to maintain forces to oppose them. It afterward became a permanent tax, raised by an assessment, at first of one shilling, afterward of two shillings, upon every hide of land throughout the realm
The Nuttall Encyclopedia
originally a tax imposed on land to buy off the Danes from the shores of England, and subsequently for other objects, such as the defence of the coast; abolished by Henry II., though re-imposed subsequently under other names.