Comments:The root is rather difficult to distinguish from *k`ăp`ù 'barrier'. There also exists MJ kòfòrì 'district, county' - which is considered by most authors a loanword from MKor. kò'ắr ( = kòwắr), see e.g. JLTT 457; the loan must have occurred already after the merger of -f- ( < *-p-) and -w- in Japanese, which can explain the orthography.
