Head, hair, the 'head-like' parts of any object (like the head of a nail), rounded or raised objects generally.
The noun root -pi- can occur inside the complex verb immediately before the verb root, where it can convey meanings ranging from literal to metaphorical.
Kurungurr Example:
Ngebinyi piket wusye.
I'll cut your hair for you.
Kurungurr Example:
Ngerrbe pidundum tye neyil.
We were hammering nails.