a peninsula of SE Asia, extending south from the Isthmus of Kra in Thailand to Cape Tanjong Piai in Malaysia: consists of SW Thailand and the states of Malaya (Peninsular Malaysia)
Ancient name: Chersonesus Aurea (ˌkɜːsəˈniːsəs ˈɔːrɪə)
Malay Peninsula in American English
peninsula in SE Asia, extending from Singapore to the Isthmus of Kra: it includes Peninsular Malaysia & part of Thailand: c. 700 mi (1,127 km) long