Green’s Dictionary of Slang

1. the nose.

1850		Bell’s Life in Sydney 2 Feb. 2/4: A flush hit on the trumpet again brought him to grass.
1868		C. White The Hop of Fashion in Darkey Drama 4 Act I: Go way, ole Indian rubber, or I’ll burst your trumpet.
1943		R.L. Bellem ‘Dead Man’s Guilt’ Dan Turner – Hollywood Detective May 🌐 I [...] waved a twenty beneath his trumpet. ‘Folding money, uncle.’.

2. (UK Und.) a vain man.

1859

Matsell Vocabulum.

3. an act of breaking wind.

1888–94		‘Walter’ My Secret Life (1966) III 433: I [...] used to pull open my arse-hole to lessen the noise of my trumpet.
2001		S. King Dreamcatcher 77: Man, that was some trumpet-blast he blew, wasn’t it? And the stink!

4. the telephone.

1977

D. Powis Signs of Crime 205: Trumpet The telephone.