n A short form of työkalupakki, which is a box designed to serve as a portable tool storage, a tool box.
n (colloquial) Reverse, in the sense of reversegear.
n (context|nautical) If a sailing vessel or any of its sails is in such position relative to the wind that the wind blows from the wrong side of a sail, the sail is said to be 'pakilla' (adessive case of the noun 'pakki').
n (context|military) A metal container belonging to a soldier's field equipment. The container serves as a cooking vessel and the top doubles as a cup.
n (context|colloquial) The event of getting reject | rejected, especially by the opposite sex when approaching her/him. Normally used in plural, 'pakit'.