furthest, extreme

儘 is composed of the BuShou of 人(man) and 盡, 盡 depicts a hand holding a broom, sweep away all dust and ashes in the container, dust can be hardly seen, the container will be thoroughly clean of the dust is cleared, so 盡 has the meaning of extremity or entirety. On the other hand, since dust is so tiny, man brooms the dust in a casual manner, so儘 has the meaning of ‘as one please’.