Definition:
The slang "by the skin of your teeth" means that someone narrowly avoided a difficult or dangerous situation, or just barely managed to accomplish something.
Use case:
You can use this slang when someone is describing a situation where they were very close to failing or experiencing a negative outcome. For example, "I almost missed my flight, but I made it by the skin of my teeth" or "I passed the test by the skin of my teeth, I only got one question right."
• I barely made it to the airport on time for my flight, I got through security by the skin of my teeth.
• I almost missed my bus this morning, but I caught it by the skin of my teeth.
• Even though he forgot his notes for the presentation, he managed to pass by the skin of his teeth.
• My friend managed to pass the exam by the skin of his teeth, after studying for only a few hours.
• The car narrowly avoided hitting the deer by the skin of its teeth.
• The athlete crossed the finish line by the skin of her teeth, beating her opponent by a hair's breadth.