Technical Definition-Short for "Tiger Knee." To TK a move is to perform a move that can be done in the air as low as possible by taking advantage of the input buffer. The motion for the air special move is input on the ground and the jump is input immediately after. The game stores the motion for the special move until the jump occurs, allowing the special move to be done right after leaving the ground without having to input the motion in the air.
In Other Words-
A table with standard inputs and their corresponding TK inputs.