Proto-North Caucasian: *č̣_Hɨ̆q̇wĂ (~ *ć̣_-, -G-)
Meaning: dung, ordure, dirt
Notes: A Lezg.-WC isogloss. The comparison is quite satisfactory both phonetically and semantically. Cf., perhaps, also Akhv. čaḳ:i 'urine' - although this would raise some semantic and phonetic problems.