Definitions of Thai:

• noun:   a branch of the Tai languages
• noun:   a native or inhabitant of Thailand
• adjective:   of or relating to Thailand

  Example: "The Thai border with Laos"

• adjective:   of or relating to the languages of the Thai people

  Example: "Thai tones"

• adjective:   of or relating to or characteristic of Thailand or its people

  Example: "Different Thai tribes live in the north"

• name:  A surname (rare: 1 in 50000 families; popularity rank in the U.S.: #7449)