'Pack thread' definitions:

Definition of 'Pack thread'

From: GCIDE
  • Pack saddle \Pack saddle\, Pack thread \Pack thread\ See under 2d Pack. [1913 Webster] packthread

Definition of 'pack thread'

From: GCIDE
  • packthread \packthread\, pack thread \pack thread\n. A strong three-ply thread or small twine used to sew or tie packs or packages. [WordNet 1.5]