Dictionary Definition :
Definition[1]
:
Vicarious suffering (in purgatory) for all beings, the work of bodhisattvas. The same idea in regard to Guanyin is conveyed in大悲千手獄.
Source
:
A Dictionary of Chinese Buddhist Terms, William Edward Soothill and Lewis Hodous
Definition[2]
:
(術語)言菩薩之大悲心代眾生受地獄之苦也。請觀音經曰:「眾生若聞名,離苦得解脫,亦遊戲地獄,大悲代受苦。」智度論四十九曰:「佛自說,本願大心為眾生故,所謂為一一人故於無量劫代受地獄苦,乃至令是人集行功德作佛入無餘涅槃。」
Source
:
丁福保《佛學大辭典》