"fine, lustrous, natural fiber produced by the larvae of various silk moths, especially the species Bombyx mori"@en . . . . . . . . . . . . . . . . . "silk"@en . . . . . . . . . . "silk"@en . . . . . . . "silk"@en . . . . . . . . . . . . . . . . . . . . . . . .