Meanings
pro (“professional”) + tip. Originally ProTip, name for small pieces of gameplay advice used as screenshot captions in GamePro magazine. The advice in a hoax version of a ProTip for id Software's Doom ("To defeat the Cyberdemon, shoot at it until it dies") was so comically obvious that it later became an Internet catchphrase.
A useful piece of advice.
Example Sentences
1
Here's a pro tip: always wear sunglasses on a sunny day to protect your eyes from harmful UV rays.
2
If you want to make your manicure last longer, here's a pro tip: apply a top coat every few days to prevent chipping.
3
Here's a pro tip for saving money: always compare prices before making a purchase to get the best deal.
4
If you're baking cookies, here's a pro tip: chill the dough in the refrigerator for an hour before baking for better texture.