Siamese

comparative more Siamese · superlative most Siamese

1. Of or relating to Siam; Thai.

   (Malaysia) Of or related to Malaysian Siamese, a community of Thai people who live in Malaysia.

   1 more example

   I remember one such occasion when a Siamese pupil had fired the train from Lime Street, and so complimentary were the Chief's remarks on the condition of the fire that we found our young Siamese friend difficult to live with for about a week afterwards!

   1943 July and August, T. Lovatt Williams, “Some Reminiscences of the Footplate—1”, in Railway Magazine, page 235

2. not comparableOf a connection of tubes or hoses: shaped like the letter Y.

1. The Thai language.

plural Siameses

1. plural "Siameses"A Siamese cat.

   The third kitten said her name was Juno, and that she was a Siamese.

   1951, Winifred Martin, Calling All Kittens, Blackie & Son Limited

2. historicalplural "Siamese" or "Siameses"An inhabitant of Siam.

   (Malaysia, specifically) a member of the Malaysian Siamese community, an ethnic group descended from Thais.

   1 more example

   PN Perlis chairman Datuk Seri Shahidan Kassim said it was unreasonable to accuse Sanusi of making racist remarks, as PN receives support from various communities, including Chinese, Indian and Siamese voters.

   2026 July 28, WAN MOHD NOOR HAFIZ WAN MANSOR, “Sanusi wouldn't make racist remarks, PN also has non-Malay voters — Shahidan”, in Sinar Daily

3. plural "Siameses"A connection of tubes or hoses shaped like a letter Y.