Sentence:  Suddenly a treble auto horn tootley-toot-tootled , and , thumbing hopefully , I saw emergent in windshield flash : red lips , streaming <WSD>silk</WSD> of blonde hair and - ah , trembling confusion of hope , apprehension , despair - the leering face of old Herry . 
Meaning of the word marked with <WSD> tags:  animal fibers produced by silkworms and other larvae that spin cocoons and by most spiders