Noun
a dress uniform for formal occasions
Source: WordNetShe had been proud of his decision to serve his country, her heart bursting with love and admiration the first time she saw him outfitted in his dress blues. Nicholas Sparks
Air Traffic Controller 2nd Class (AW) Cheryl Ehrenfeld has a unique perspective on the fit of the service dress blues. Source: Internet
The redesigned dress blues sport new front pockets that allow sailors to carry items like a wallet and cell phone. Source: Internet