dob·by 
(dŏbē)
(dŏbē)n. pl. dob·bies
1. A mechanical part in a loom that controls the harnesses so as to permit weaving of small geometric figures.
2.
a. A small geometric figure woven into fabric.
b. A fabric with such figures.
[Perhaps from Dobbie, diminutive of Dob, alteration of Rob, nickname for Robert.]