noun Date: 1815 the black residue chiefly of tribasic calcium phosphate and carbon from bones calcined in closed vessels used especially as a pigment or as a decolorizing adsorbent in sugar manufacturing
BONE BLACK
Meaning of BONE BLACK in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012