Strut
/stɹʌt/
noun
Protuberance, air pressure
verb
To swell; protuberate; bulge or spread out.
(originally said of fowl) To stand or walk stiffly, with the tail erect and spread out.
To walk proudly or haughtily.
“He strutted about the yard, thinking himself master of all he surveyed.”
Synonyms: swagger