Pictograph of a head (首) on top of a person (卩). Means "head" when pronounced xié. Has unrelated meaning "leaf" when pronounced yè, due to this character being adopted as a variant form of 葉.
Oracle Bone~1250-1000 BCOracle Bone~1250-1000 BCBronzeMid Western Zhou~900 BCSealWarring States (Chu)475-221 BCSealWarring States (Chu)475-221 BCSealWarring States (Chu)475-221 BCSealShuowen~100 ADClericalEastern Han25-220 ADRegularModern