1) Practicing 2) Pressing 3) Working at 4) Working diligently 
In the textile arts, plying is a process used to create a strong, balanced yarn. It is done by taking two or more strands of yarn that each have a twist to them and putting them together. The strands are twisted together, in the direction opposite that in which they were spun. When just the right amount of twist is added, this creates a balanced y...
• (p. pr. & vb. n.) of Ply