Sep 28, 2025 shirt ˈshərt 1 syllable common ‹ noun. a garment for the upper part of the body: such as lost his shirt on that business deal noun. a cloth garment usually having a collar, sleeves, a front opening, and a tail long enough to be tucked inside trousers or a skirt noun. undershirt › Origin Middle English shirte, from Old English scyrte; akin to Old Norse skyrta shirt, Old English scort short.