1. To relax. 2. A comfortable seat. 3. A relaxing place or seat. 4. To 'hang out' and relax with others.
"I'll be out later, I'm cotchin at the mo."
Meaning I will meet you later, I'm relaxing at the moment.
"Come cotch at mine."
Meaning come and relax at my home.
"let's go to my cotch."
Meaning lets go to my relaxing, comfortable place.
"ah man dis is a cotch."
Meaning this is very comfortable.