of or pertaining to Siam, its people, or their language.
Thai (def. 3).
twin; closely connected; similar.
dual; combined; twofold or two-way: a Siamese sprinkler.
—n.
a native of Siam.
Thai (def. 2).
See
(usually l.c.) 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.