Where does “ស្បែកជើង” come from?

ស្បែកជើង (Khmer) comes from Khmer ជើង, from Old Khmer ជេង៑, from Proto-Mon-Khmer ɟuŋ — leg, foot.

ស្បែកជើង (Khmer): shoe

Definitions

Step	Language	Word	Meaning
1	Khmer	ជើង	leg, foot; leg; base, bottom, support
2	Old Khmer	ជេង៑	—
3	Proto-Mon-Khmer	ɟuŋ	leg, foot

ស្បែកជើង — Etymology, Origin & Word History | Etymology Explorer