A turban symbolizes intelligence and wisdom. Aaron's turban of ordinary linen, mean the intelligence that is related to natural truth. See Leviticus 16:4; Ezekiel 44:18. Things made of 'linen' or 'flax' signify truth in the natural level of a person's mind. (Arcana Coelestia 7601)

'A turban' signifies intelligence of truth.

(Referencat: Apocalypse Explained 204)