shirt sleeves

Noun

 * 1) Preceded by : wearing only a shirt without a coat, jacket, or comparable protective covering over it.
 * 2)  A  working-class socioeconomic status (not requiring a professional business jacket).
 * 1)  A  working-class socioeconomic status (not requiring a professional business jacket).
 * 1)  A  working-class socioeconomic status (not requiring a professional business jacket).
 * 1)  A  working-class socioeconomic status (not requiring a professional business jacket).