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Webster 1913 Edition
Tombac
Tom′bac
,Noun.
 [Pg. 
tambaca
,tambaque
, fr. Malay tambāga 
copper; cf. Skr. tāmraka
; cf. F. tombac
.] (Metal.) 
An alloy of copper and zinc, resembling brass, and containing about 84 per cent of copper; – called also 
German brass 
or Dutch brass
. It is very malleable and ductile, and when beaten into thin leaves is sometimes called Dutch metal
. The addition of arsenic makes white tombac
. [Written also 
tombak
, and tambac
.] Webster 1828 Edition
Tombac
TOM'BAC
,Noun.