Sceacian

Part of speech: verb

Definitions

1. To suffer defeat or to perish in battle; to fail or fall in conflict; to be overcome or destroyed in combat
2. Experiencing loss or destruction during warfare; succumbing to adversaries or challenges; meeting one's end through violent confrontation
3. Being vanquished or dying as a result of fighting; losing a struggle or contest; perishing due to hostile forces or circumstances

Etymology: The verb's best-attested senses in Old English are "to shake," "to depart," and "to flee" or "hurry away," and the English word "shake" descends from this same Germanic verb. The idea of leaving or moving off is the thread running through its meanings. A sense of "dying in battle" is not one I can confirm for this form, so the closest documented idea is the departure of a person from the field or from life.