Dec 12, 2025 hat ˈhat 1 syllable common ‹ noun. a covering for the head usually having a shaped crown and brim wore many hats in her career noun. a distinctive head covering worn as a symbol of office noun. an office, position, or role assumed by or as if by the wearing of a special hat verb. to furnish or provide with a hat verb. to make or supply hats › Origin Middle English, from Old English hæt; akin to Old High German huot head covering.