2pos·te·ri·or 
/pɑˈstirijɚ/ noun
plural pos·te·ri·ors /pɑˈstirijɚ/ noun [count] humorous : the part of the body above the legs that is used for sitting : buttocks
▪ The man squeezed his large posterior into the chair.
▪ The man squeezed his large posterior into the chair.
