Definition of "unthread"

unthread

verb
third-person singular simple present unthreads, present participle unthreading, simple past and past participle unthreaded
1. (transitive) To draw or remove a thread from.
  Quotations
  Its eyes, though wild, were still all dewy bright / With love, and kept all phantom fear aloof / From the poor girl by magic of their light, / The while it did unthread the horrid woof / Of the late darken'd time,— […]
  1820, John Keats, “Isabella; or, The Pot of Basil. A Story from Boccaccio.”, in Lamia, Isabella, the Eve of St. Agnes, and Other Poems, London: […] [Thomas Davison] for Taylor and Hessey, […], stanza XXXVII, page 67
  "Good and evil! good and evil!" thought he; "ye are mingled inextricably in the web of our being; and who may unthread the darker yarn?"
  1832, Letitia Elizabeth Landon, Heath's Book of Beauty, 1833, The Talisman, page 62
2. (transitive) To loosen the connections of.
3. (transitive) To make one's way through.