Merriam-Webster's Collegiate® Dictionary, 11th Edition
SILK
I. noun
Usage: often attributive see: sericeous Date: before 12th century a fine continuous protein fiber produced by various insect larvae usually for cocoons, thread, yarn, or fabric made from silk filaments,
3. a garment of silk, b. a distinctive silk gown worn by a King's or Queen's Counsel, a King's or Queen's Counsel, the colored cap and blouse of a jockey or harness horse driver made in the registered racing color of the employing stable,
4. a filament resembling silk, silky material , parachute , silklike adjective
II. intransitive verb
Date: 1783
to develop the silk