Proto-West-Caucasian: *p(ǝ)c̣V
Meaning: naked
Adyghe: ṗc̣āna
Kabardian: ṗc̣āna
Ubykh: -ṗc̣ǝ
Comments: PAK *ṗc̣a-ná. The root is also used in compounds *ʎa-ṗc̣á 'bare-footed' (Kab. ʎāmc̣a / ʎāṗc̣a, Ad. ʎāṗc̣a) = Ub. ʎa-ṗc̣ǝ́ and *śħa-ṗc̣á 'bare-headed' (Kab. śħamc̣a / śħaṗc̣a, Ad. śħāṗc̣a) = Ub. ša-ṗc̣ǝ́.
Shagirov (2,49-50) proposes to compare PAK *ṗc̣a rather with Ub. ṗć̣a 'clean' (thus considering Ub. -ṗc̣ǝ a loan from Ad.). This seems to us less likely, because Ub. ṗć̣a has a different etymology (see PWC *ṗǝźV 'clean'), and we prefer to follow Abdokov (1973, 57, 65).
