noun, noun or participle which takes 'suru', intransitive verb
wearing oneself out with work; toiling to exhaustion
Rare literary noun and intransitive suru-verb. Describes the state of being worn out from ceaseless work or running oneself ragged. Not used in everyday conversation; modern equivalents include 働きすぎで疲れ果てる or 身を粉にして働く.
彼は奔命に暮れ、ついに倒れてしまった。
He wore himself out with work and finally collapsed.
奔命の末に病
Not a few fell ill after toiling to exhaustion.