Where does “ช่องอก” come from?

ช่องอก (Thai) comes from Thai อก, from Proto-Vietic ʔaːk, from Proto-Mon-Khmer kʔaak — crow; to caw.

ช่องอก (Thai): thoracic cavity; chest cavity

Definitions

  1. thoracic cavity; chest cavity

Ancestry of “ช่องอก”, step by step

ช่องอก traces back through two separate lines of ancestry.

via Thai อก

StepLanguageWordMeaning
1Thaiอกchest; breast; heart; feelings
2Proto-Vieticʔaːkcrow
3Proto-Mon-Khmerkʔaakcrow; to caw

via Thai ช่อง

StepLanguageWordMeaning
1Thaiช่องopening; hole; cavity; gap
2Proto-Taiɟoːŋᴮcrack; hole; crack, hole
Every word from Proto-Mon-Khmer kʔaak →Every word from Proto-Vietic ʔaːk →Every word from Thai อก →