Siamese

American Heritage® Dictionary of the English Language, Fourth Edition

1. adj. Of or relating to Siam; Thai.
2. adj. Closely connected or very similar; twin.
3. adj. Of or being a Y-shaped dual connection between two pipes or hoses and a larger pipe or hose.
4. n. A native or inhabitant of Siam; a Thai.
5. n. The Thai language.

Century Dictionary and Cyclopedia

1. Of or pertaining to the kingdom, the people, or (in a limited sense) the dominant race of Siam.
2. n. singular and plural An inhabitant or a native, or inhabitants or natives, of Siam, a kingdom of Farther India, or Indo-China: specifically, a member or the members of the dominant race of the kingdom, who constitute less than half of the population.
3. n. The prevalent language of Siam, which in its basis is monosyllabic and inflexible, exceptionally abounding in homonyms distinguishable only by variations of tone.
4. To join in the manner of the Siamese twins; inosculate. Compare Siamese coupling, under Siamese.

Wiktionary

1. adj. Of, or relating to Siam; Thai
2. adj. Of a connection of tubes or hoses shaped like a letter Y.
3. n. The Thai language
4. n. The Siamese cat
5. n. An inhabitant of Siam

GNU Webster's 1913

1. adj. Of or pertaining to Siam, its native people, or their language.
2. n. A native or inhabitant of Siam; pl., the people of Siam.
3. n. The language of the Siamese.

WordNet 3.0

1. adj. of or relating to the languages of the Thai people
2. adj. of or relating to Thailand
3. n. a slender short-haired blue-eyed breed of cat having a pale coat with dark ears paws face and tail tip
4. n. a branch of the Tai languages
5. adj. of or relating to or characteristic of Thailand or its people
6. n. an inlet with two or more couplings to which a hose can be attached so that fire engines can pump water into the sprinkler system of a building
7. n. a native or inhabitant of Thailand