1. pleating - Noun
2. pleating - Verb
the act of folding in parallel folds
Source: WordNetIn pleating to the stripe, one of the vertical stripes in the tartan is selected and the fabric is then folded so that this stripe runs down the center of each pleat. Source: Internet
Pleating to the sett In pleating to the sett, the fabric is folded so that the pattern of the sett is maintained and is repeated all around the kilt. Source: Internet
This is often called military pleating because it is the style adopted by many military regiments. Source: Internet