Good. Perfect. Untainted. Mint condition. Healthy.
Of something or somebody.
If a car salesman tells you the car is in top-notch shape, just kick him straight in the gonads.
Despite the cocktail of Anejo tequilla and cocaine, I feel in top-notch form this morning!
1) a notch that is the highest in a row or column of notches
2) slang. an item, person or idea that is so much better than everything else that it is ridiculous.
"Just hang that on the top notch"
"These cheese fries are top notch"