vexillary
/ˌvɛksɪˈlɛri/ or /ˌvɛksɪˈlɑːri/Definitions
1. adjective
relating to or resembling a vexillum, a type of Roman military standard.
“The vexillary symbol was prominently displayed on the ancient Roman legion’s banner.”
2. noun
a vexillum, especially one used as a symbol of a Roman legion.
“The museum displayed a replica of an ancient Roman vexillary.”