(bound form) ordinary; numerous; (bound form) pertaining to a concubin
Depicts a stone pot (石) over a fire (灬). Based on the original meaning "to cook; boil", now written as 煮. The current meaning is a phonetic loan.
《說文》：“庶，屋下眾也。从广、炗。炗，古文光字。”
to cook; boil