quilt

Quilt comes from Middle English quilte, quylte, borrowed from Anglo-Norman quilte and Old French coilte, cuilte (compare French couette), which trace back to Latin culcita.

The word passed from Latin through Old French and Anglo-Norman into Middle English with spellings like quilte and quylte before settling into its modern form.

Quilt is a doublet of quoit — the two words both descend from the same Latin source, culcita, having traveled into English by different routes.