What does Dobby mean?
A type of fabric with small geometric figures incorporated into the weave.
Heddels explains Dobby
Dobby refers to any type of fabric created with a dobby weave, a method in which the warp threads are raised and lowered throughout the weaving process to form various patterns. Dobby fabrics are used mainly for clothes and home décor and are distinguishable by their unique textures.
Here is an example of dobby thread: