\Fil"i*grain\, Filigrane \Fil"i*grane\, n. [Sp.
filigrana (cf. It. filigrana, E. filigrane), fr. L. filuma
thread + granum grain. See {File} a row, and {Grain}, and cf.
{Filigree}.]
Filigree. [Archaic]
      With her head . . . touches the crown of filigrane.
                                               --Longfellow.