noun
charity show; benefit performance
A performance or entertainment event held to raise funds for charitable purposes.
地元の劇団が慈善興行を開いて、収益を被災地に寄付した。
The local theater company held a charity show and donated the proceeds to the disaster-stricken area.
Compound of 慈善 (charity) and 興行 (performance, show). The exact historical derivation is uncertain, but the word follows standard Sino-Japanese compounding patterns.