[sahy-uh-meez, -mees] 
adjective, noun, plural -mese.| 1. | of or pertaining to Siam, its people, or their language. |
| 2. | Thai (def. 3). |
| 3. | twin; closely connected; similar. |
| 4. | Informal. dual; combined; twofold or two-way: a Siamese sprinkler. |
| 5. | a native of Siam. |
| 6. | Thai (def. 2). |
| 7. | Siamese cat. |
| 8. | (usually lowercase ) a standpipe placed outside a building close to ground level, having two or more openings so that fire engines can pump water to the sprinkler system of the building. |
| Si·a·mese (sī'ə-mēz', -mēs') adj.
[After Siam (Thailand).] |