Raspberry

From earlier raspis berry, possibly from raspise (a sweet rose-colored wine), from Anglo-Latin vinum raspeys, of uncertain origin.

Full definition of raspberry

(plural raspberries)

Containing or having the flavor/flavour of raspberries.
Of a dark pinkish red.She wore a raspberry beret — lyrics of Raspberry Beret, by the musician Prince_(artist)

1903, M. E. Waller, A Daughter of the Rich, Little, Brown, and Company (1903), page 137:she stuck burrs in my bed and lead me through the nettle-patch when we were raspberrying, because she knew I did n't know nettles;
1917, Lucy Maud Montgomery, Anne's House of Dreams, Chapter 37:"Owen and she went raspberrying in the woods back of her farm," answered Anne. "They won't be back before supper timeâ€”if then."
1944, Cornelius Weygandt, The Heart of New Hampshire: Things Held Dear by Folks of the Old Stocks, G. P. Putnam's Sons (1944), page 129:Mrs. Thrifty was picking pie cherries, two boys were raspberrying, and the fourth son, as I recall it, blueberrying.
1976, Emily Ward, The Way Things Were: An Autobiography of Emily Ward, Newport Press (1976), page 4:My mother told my sister Sally and me that if we were good little girls we might go raspberrying up on the mountains when the raspberries were ripe.
1988, Charles McCarry, The Bride of the Wilderness, MysteriousPress.com (2011), ISBN 9781453232521, unnumbered page:In strawberry time she had seen individual bears grazing in the meadows along the bluff, and later, while raspberrying, she heard one gobbling fruit and snorting on the other side of the bush.

Cockney rhyming slang raspberry tart, for fart. However raspberry is rarely used for a fart, merely a noise which imitates it.

(plural raspberries)

(pejorative, colloquial) A noise intended to imitate the passing of flatulence, made by blowing air out of the mouth while the tongue is protruding from and pressed against the lips, or by blowing air through the lips while they are pressed firmly together or against skin, used humorously or to express derision.