Pronounced PAHT-na. Caribbean (Trinidadian) dialect for 'partner'. Can be meant in as a term of comeraderie, or it can be an aggessive, acromonious, and sarcastic term signaling a conflicting view of the other person, depending on the context (like 'buddy', 'pal', etc.).
EXAMPLE 1:
Aye, go see Lenroy by de roti shop on Eglinton Avenue West fuh de tickets ... da'is meh good pahtnah.
EXAMPLE 2:
Aye, whey wrong wit yuh chupid ass, pahtnah?!?