means Ruching is decorative gathering or pleating of fabric into closely packed folds or ripples, used to add texture and shape to a garment or trim.

from From the French 'ruche,' meaning a beehive — the same word for the woven straw dome where bees live. The pleated, honeycombed look of gathered fabric apparently reminded French speakers of those ribbed hives, and the English borrowed the term in the 19th century. The French 'ruche' itself likely descends from a Late Latin or Gaulish root meaning 'bark' or 'tree-bark,' since early hives were made from bark — so the thread runs, fittingly, from trees to bees to dressmaking.