Of or pertaining to a truce; specifically, to the truce obtaining between Britain and various Arab sheikdoms of the Oman peninsula.

(historical) Pertaining to the Trucial States / (historical) Pertaining to the Trucial Coast

(historical) Former name of Trucial Oman. A collection of former protectorates (since the 1820 General Maritime Treaty) of the United Kingdom, comprising most of the small Arab coastal states (then sheikhdoms) located along the Persian Gulf. The precursor of the United Arab Emirates (UAE).

plural of Trucial State

A state in the Trucial States