I. ˌsī-ə-ˈmēz, -ˈmēs adjective
Etymology: Siam (Thailand); in senses 2 & 3, from Siamese twin
Date: 1693
1. : of, relating to, or characteristic of Thailand, the Thais, or their language
2. : exhibiting great resemblance : very like
3. not capitalized : connecting two or more pipes or hoses so as to permit discharge in a single stream
II. noun
( plural Siamese )
Date: 1693
1. : Thai 2
2. : Thai 3
3. : Siamese cat