Thai (Adjective) — Of or relating to or characteristic of Thailand or its people. ex. "different Thai tribes live in the north"
Thai (Adjective) — Of or relating to the languages of the Thai people. ex. "Thai tones"
Thai (Adjective) — Of or relating to Thailand. ex. "the Thai border with Laos"
Thai (Noun) — A branch of the Tai languages.
Thai (Noun) — A native or inhabitant of Thailand.