Definition of "Posture" :

noun: characteristic way of bearing one's body

"Stood with good posture."

noun: the arrangement of the body and its limbs

noun: capability in terms of personnel and materiel that affect the capacity to fight a war

"Politicians have neglected our military posture."

noun: a rationalized mental attitude

verb: assume a posture as for artistic purposes

verb: behave affectedly or unnaturally in order to impress others

"She postured and made a total fool of herself."