From Proto-Tai *cramᶜ. Cognate with Thai ถ้ำ (tâm), Northern Thai ᨳ᩶ᩣᩴ, Lao ຖ້ຳ (tham), Shan ထမ်ႈ (thām), Ahom 𑜌𑜪 (thaṃ), Zhuang gamj.
ᦏᧄᧉ • (ṫham²) (classifier ᦐᦽᧈ)