San"di*ver (?), n. [Perh. fr. OF. sain grease, fat + de of + verre glass (cf. Saim), or fr. F. sel de verre sandiver.]
A whitish substance which is cast up, as a scum, from the materials of glass in fusion, and, floating on the top, is skimmed off; -- called also glass gall.
[Formerly written also sandever
© Webster 1913.