rayadilloEtymologyBorrowed from Spanish rayadillo (“striped cotton cloth”, literally “finely striped”), from rayar + -ado + -illo.rayadillo means A blue-and-white striped cotton or flannel material used to make the military uniforms worn by Spanish colonial soldiers from the mid 19th century until the early 20th Century. Lexicurio rates it Sui generis — a strength score of 88 out of 100.nounA blue-and-white striped cotton or flannel material used to make the military uniforms worn by Spanish colonial soldiers from the mid 19th century until the early 20th Century.