An arm of the Arabian Sea, to which it is connected by the Strait of Hormuz and the Gulf of Oman. It extends north-westwards between the Arabian peninsula and the coast of south-western Iran.
Also called Arabian Gulf and informally "the Gulf"
Definition of Persian Gulf in US English:
Persian Gulf
proper nounˌpərZHən ˈɡəlf
An arm of the Arabian Sea, to which it is connected by the Strait of Hormuz and the Gulf of Oman. It extends northwestward between the Arabian peninsula and the coast of southwestern Iran.