Filigrain \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.