You have to ask your employer what it is. There are no standard rules for the items in box 14.
Is it money that was paid to you, or money that was deducted from your pay? In either case, what was it for? We have no way of knowing. You have to find out from your employer. If it was money that was paid to you, you also have to find out whether or not it is already included in the total wages in box 1 of your W-2.
When you find out what it is, and why it was paid to you or deducted from your pay, then we should be able to tell you how to enter it in TurboTax.
