STRUT, verb intransitive
1. To walk with a lofty proud gait and erect head; to walk with affected dignity.
Does he not hold up his head and strut in his gait?
2. To swell; to protuberate.
The bellying canvas strutted with the gale. [Not used.]
STRUT, noun A lofty proud step or walk with the head erect; affectation of dignity in walking.