From a non-Mon-Khmer substrate language of India; see Sanskrit कर्कट (karkaṭa, “crab”) and Hindi केकड़ा (kekṛā) for more. Alternatively, from Proto-Mon-Khmer *kt₁aam.
ᱠᱟᱴᱠᱚᱢ • (kaṭkôm)
