Ubosot
(Th.)
[Thai pronunciation of uposatha (P.); upavasatha (Skt.)] : A Buddhist building with a rectangular plan, inside which is enshrined the
presiding Buddha image. Outside and around the ubosot are placed eight boundary stones or marker slabs (Thai : bai sema) at the eight
cardinal points in order to mark off the sacred boundary of the Sangha or the monastic Order. This edifice is the place where a Buddhist
ordination and ritual are performed.

[Ref: An outline of the History of Religious Architecture in Thailand - Sonthiwan Intralib (1991).]
Ushnisha
Protuberance (cranial knob) on the head of a Buddha image symbolizing his wisdom and openness as an enlightened being.
   
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Siampedia by Tricky Vandenberg