Charcoal comes from Middle English charcole; the second element is coal, while the first is of uncertain origin, possibly from Old French charbon ('charcoal') or from chare/char ('to turn'). The historical trail runs through col in Old English. The history must be left partly open, preserving the uncertainty rather than forcing a single unsupported ancestry. Used as a noun and adjective, charcoal now means "a black porous form of carbon made by heating wood without air", so the present definition can be read against the older forms and meanings. The same lexical family is also visible in derived forms such as char and related forms such as coal and char. That uncertainty is part of the entry: the safest account is the attested form and the limited comparisons preserved with it.