CANKLE is the ankle of a person (usually fat) where there is no clear distinction between the where the calf ends and the ankle starts. Hence, the merging of the terms calf and ankle.
I almost forgot about the family conversation until I saw our neighbor’s baby. At one year old, she has a serious case of the cankles.
Hopefully, she will outgrow it but some adults seem to have a long-term
case of cankle.
Note: an alternative spelling is kankle.