Green’s Dictionary of Slang

(W.I./UK black teen) animal flesh, meat by-products eaten as food.

1990		L. Todd International Eng. Usage 108: Rastafarian terminology changes regularly but items such as Babylon (oppression), deaders (meat) and dreadlocks (type of ringlets) are found throughout.
1995		R. Banks Rule of the Bone 155: [...] or any of what he called deaders which meant meat basically and no salt on anything.
2000		V. Pollard Lang. of Rastafari 104: Some others are ‘deaders’ for meat and its by-products.