An adjective glossed “borne, worn, especially a vestment or cloak” (MR/385), clearly based on the root √KOL “bear, carry, wear” (PE17/158). In the index to Morgoth’s Ring Christopher Tolkien translated it as “vestment, cloak”, but I think he confused it with collo (MR/471).
Quenya
colla
borne, worn
colla
adjective. borne, worn; vestment, cloak
colla passive participle "borne, worn" (compare #col- "bear"); also used as a noun = "vestment, cloak" (MR:385). Variant form collo "cloak" _(SA:thin(d) ) _in the name Sindicollo (q.v.), sc. colla with a masculine ending.