The spelling of the word "thread grannle" may seem confusing at first, but it is actually quite straightforward when broken down phonetically. The first part, "thread," is pronounced as thred (θɹɛd) and refers to a thin string used for sewing or weaving. The second part, "grannle," is pronounced as gran-uhl (ˈɡɹænəl) and is a Scottish dialect word meaning a coarse, knotted thread used in fishing. Together, "thread grannle" describes a thick, strong thread used for heavy-duty sewing or fishing.
Cytomicrosome.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.