Webster's Dictionary (GCIDE)
Electre
\E*lec"tre\, Electer
\E*lec"ter\, n.
[L. electrum: cf. F. ['e]lectre mixture of gold and silver. See Electrum.]1.Amber. See Electrum. [Obs.] [1913 Webster]
2.A metallic substance compounded of gold and silver; an alloy. [Obs.] --Wyclif. [1913 Webster]