Sea trum·pet
 1. Bot. A great blackish seaweed of the Southern Ocean, having a hollow and expanding stem and a pinnate frond, sometimes twenty feet long.
 2. Zool. Any large marine univalve shell of the genus Triton. See Triton.
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 Tri·ton n.  Gr. Myth. A fabled sea demigod, the son of Neptune and Amphitrite, and the trumpeter of Neptune.  He is represented by poets and painters as having the upper part of his body like that of a man, and the lower part like that of a fish. He often has a trumpet made of a shell.
 Have sight of Proteus rising from the sea,
 Or hear old Triton blow his wreathed horn.   --Wordsworth.
 2. Zool. Any one of many species of marine gastropods belonging to Triton and allied genera, having a stout spiral shell, often handsomely colored and ornamented with prominent varices. Some of the species are among the largest of all gastropods. Called also trumpet shell, and sea trumpet.
 3. Zool. Any one of numerous species of aquatic salamanders. The common European species are Hemisalamandra cristata, Molge palmata, and Molge alpestris, a red-bellied species common in Switzerland. The most common species of the United States is Diemyctylus viridescens. See Illust. under Salamander.
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 Trump·et n.
 1. Mus. A wind instrument of great antiquity, much used in war and military exercises, and of great value in the orchestra. In consists of a long metallic tube, curved (once or twice) into a convenient shape, and ending in a bell. Its scale in the lower octaves is limited to the first natural harmonics; but there are modern trumpets capable, by means of valves or pistons, of producing every tone within their compass, although at the expense of the true ringing quality of tone.
 The trumpet's loud clangor
 Excites us to arms.   --Dryden.
 2. Mil. A trumpeter.
 3. One who praises, or propagates praise, or is the instrument of propagating it.
    That great politician was pleased to have the greatest wit of those times . . . to be the trumpet of his praises.   --Dryden.
 4. Mach A funnel, or short, fiaring pipe, used as a guide or conductor, as for yarn in a knitting machine.
 Ear trumpet. See under Ear.
 Sea trumpet Bot., a great seaweed (Ecklonia buccinalis) of the Southern Ocean. It has a long, hollow stem, enlarging upwards, which may be made into a kind of trumpet, and is used for many purposes.
 Speaking trumpet, an instrument for conveying articulate sounds with increased force.
 Trumpet animalcule Zool., any infusorian belonging to Stentor and allied genera, in which the body is trumpet-shaped. See Stentor.
 Trumpet ash Bot., the trumpet creeper. [Eng.]
 Trumpet conch Zool., a trumpet shell, or triton.
 Trumpet creeper Bot., an American climbing plant (Tecoma radicans) bearing clusters of large red trumpet-shaped flowers; -- called also trumpet flower, and in England trumpet ash.
 Trumpet fish. Zool. (a) The bellows fish. (b) The fistularia.
 Trumpet flower. Bot. (a) The trumpet creeper; also, its blossom. (b) The trumpet honeysuckle. (c) A West Indian name for several plants with trumpet-shaped flowers.
 Trumpet fly Zool., a botfly.
 Trumpet honeysuckle Bot., a twining plant (Lonicera sempervirens) with red and yellow trumpet-shaped flowers; -- called also trumpet flower.
 Trumpet leaf Bot., a name of several plants of the genus Sarracenia.
 Trumpet major Mil., the chief trumpeter of a band or regiment.
 Trumpet marine Mus., a monochord, having a thick string, sounded with a bow, and stopped with the thumb so as to produce the harmonic tones; -- said to be the oldest bowed instrument known, and in form the archetype of all others. It probably owes its name to “its external resemblance to the large speaking trumpet used on board Italian vessels, which is of the same length and tapering shape.” --Grove.
 Trumpet shell Zool., any species of large marine univalve shells belonging to Triton and allied genera. See Triton, 2.
 Trumpet tree. Bot. See Trumpetwood.