Top definition
The fleshy skin between your fingers
(a normal 4 fingered 1 thumbed hand has 4 coch cochs)
Pinching your coch coch bewteen your thumb and first finger is said to get rid of headaches

Heather said: Hey Natalie, wanna touch my coch coch with your wenis (skin on your elbow)???
by Heather and Natalie June 19, 2005
Happy St. Patties Day!