So, basically this word means "delicious", to describe a good food, as you already know. But colloquially, people also use this word, as an expression, to compliment on anything that is good for them. It's like saying "được" (Good!).
For example:
A: May qúa, trời hết mưa rồi. Mai chắc là trời đẹp đấy.
B: Ngon, thế là đi leo núi được rồi.
A: What a luck. it has stopped raining, tomorrow the weather will be good!
B: Good! then we can go hiking!
A: Cái áo này nhìn thế nào?
B: Ngon.
A: How does this shirt look (on me)?
B: Good!
Using "Ngon" to describe an attractive woman might sound a bit informal, even offensive to some. So, be careful. See you!
For example:
A: May qúa, trời hết mưa rồi. Mai chắc là trời đẹp đấy.
B: Ngon, thế là đi leo núi được rồi.
A: What a luck. it has stopped raining, tomorrow the weather will be good!
B: Good! then we can go hiking!
A: Cái áo này nhìn thế nào?
B: Ngon.
A: How does this shirt look (on me)?
B: Good!
Using "Ngon" to describe an attractive woman might sound a bit informal, even offensive to some. So, be careful. See you!