A noun for “tressure” in notes from the late 1960s derived from ✶cas-raya = √KAS “head” + √RAY “net, lace” (VT42/12). Given this word’s etymology, Tolkien was probably using “tressure” with its Middle English sense = “headdress”.
Quenya
carrëa
tressure
carrëa
noun. tressure, tressure, *headdress
carrëa (for cas-raya) noun "tressure" (net for confining the hair). (VT42:12)