เขา
khao · RTGS: khao
one of the bony outgrowths on the heads of certain ungulates, any hard protuberance from the head of an organism that is similar to or suggestive of a horn, a land mass that projects well above its surroundings; higher than a hill
เนินที่นูนสูงขึ้นไปเป็นจอมเด่น; สิ่งที่งอกออกมาจากหัวสัตว์บางพวก มีลักษณะแข็ง; เถาวัลย์
Why rising tone?
High-class consonants in live syllables without a tone mark produce Rising tone. This is the default for high-class consonants.
What is a live syllable?
Live syllable (ends with a vowel or sonorant consonant like m, n, ng)
About High-class consonants
High-class consonants include ข, ฃ, ฉ, ฐ, ถ, ผ, ฝ, ศ, ษ, ส, and ห. In live syllables without a tone mark, they produce a rising tone. With mai ek (่), they produce a low tone.