The after condition of rebirth; later born; youth.

A Dictionary of Chinese Buddhist Terms, William Edward Soothill and Lewis Hodous

即未來之生。相對於「前生」、「今生」。又作來世、來生、後世。佛教立三世因果輪迴轉生，以今生為前生之後生，而今生之苦樂多由前生之業因，後生之苦樂亦由今生之善惡業所造，故對今生之造業須謹慎行之，特別於淨土門期望證悟佛果者，更不可造次。〔法華經卷三藥草喻品、勝鬘經如來真實義功德章、往生禮讚偈〕

佛光電子大辭典

p3803

後生 (hòu shēng) 　( “the life (or lives) after this” )

{《漢語大詞典》3.958b(北齊代)} ; {《大漢和辞典》4.840b(佛典)} ;

Dharmarakṣa: {91b5} 長益樂地獄 好憙畜生處 後生墮餓鬼 億數難思議(v)

{K.177.1-}

Kumārajīva: {not found at L.24c8} 

A Digital Edition of A Glossary of Dharmarakṣa translation of the Lotus Sutra by Seishi Karashima, 1998