diàn
hall
Original meaning:
to smack the buttocks
Depicts a weapon (殳) smacking a person's buttocks (𡱒). In ancient China, having one's buttocks smacked with a huge stick was one of the punishments criminals could have. Based on the original meaning, "to smack the buttocks". The meaning later shifted to "palace" and "hall", because buildings have an elevated appearance that stick out like buttocks.
Components
Evolution

Bronze script
Late Western Zhou (~800 BC)
Seal script
Shuowen (~100 AD)
Clerical script
Western Jin dynasty (266-316 AD)Regular script
ModernDefinitions
Sources
季旭昇《說文新說》p.227-228