the.com/bone meal

means A powdery fertilizer made from crushed, steamed animal bones, prized for its slow-release phosphorus and calcium that feed root growth and flowering.

from Straightforward compound of 'bone' and 'meal' (meal meaning coarsely ground grain or substance, from Old English 'melu'). Bones left over from slaughterhouses and tanneries were historically too useful to waste — steamed, dried, and crushed into grit, they became a farmer's fertilizer long before synthetic alternatives existed, prized especially for the phosphorus that gives plants strong roots and flowers.