brasilein \bra*sil"e*in\, {C16H12O5}, to which brazilwood owes its dyeing properties. [Webster 1913 Suppl.] Brasque \Brasque\, n. [F.] (Metal.) A paste made by mixing powdered charcoal, coal, or coke with clay, molasses, tar, or other suitable substance. It is used for lining hearths, crucibles, etc. Called also {steep}. [Webster 1913 Suppl.]