/ ˈpɒstʃə(r); NAmE ˈpɑːs-/ noun , verb
■ noun
1.
[ U , C ] the position in which you hold your body when standing or sitting :
a comfortable / relaxed posture
upright / sitting / supine postures
Good posture is essential when working at the computer.
Back pains can be the result of bad posture .
2.
[ C , usually sing. ] your attitude to a particular situation or the way in which you deal with it :
The government has adopted an aggressive posture on immigration.
■ verb
[ v ] posture (as sth) ( formal ) to pretend to be sth that you are not by saying and doing things in order to impress or trick people
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WORD ORIGIN
late 16th cent. (denoting the relative position of one thing to another): from French , from Italian postura , from Latin positura position, from posit- placed, from the verb ponere .