- Something shaped like a trumpet, esp. the tubular corona of a daffodil flower
- (trumpet) cornet: a brass musical instrument with a brilliant tone; has a narrow tube and a flared bell and is played by means of valves
- An organ reed stop with a quality resembling that of a trumpet
- (trumpet) proclaim on, or as if on, a trumpet; "Liberals like to trumpet their opposition to the death penalty"
- A brass musical instrument with a flared bell and a bright, penetrating tone. The modern instrument has the tubing looped to form a straight-sided coil, with three valves
- huntsman's horn: pitcher plant of southeastern United States having erect yellow trumpet-shaped pitchers with wide mouths and erect lids