playoff; tiebreaker; a match to decide (something such as the winner)

the final game or games, final race or races, finals

An extra game of soccer, baseball, martial arts, etc; an extra time; an extra innings.

to sell one's body

to go through severe hardships

Kyūjitai form of 黄身

(figuratively) to wear out with one's heart and soul

Kyūjitai form of 満身: entire body

ease in one's body, relaxation / establishing oneself in the world, making a career for oneself

be successful in life, build a fortune, rise