Questions about example sentences with, and the definition and usage of "Mint"

A: "Mint" condition.
It means perfect, brand new.
I think the term originated in coin collecting. After coins have been used a while, they become less shiny, and might have a scratch or nick on them. A mint condition coin is a coin straight from the mint (which is where coins are made.)

A: Haven't drank it in ages means that you haven't drank mint tea with honey in a long time.

A: "Ground" means that it is crushed, usually into a powder.

Beef: https://upload.wikimedia.org/wikipedia/commons/6/60/Standing-rib-roast.jpg
Ground Beef: http://www.pre-brands.com/wp-content/uploads/2017/02/pre-ground-beef-raw-2.png

Mint: http://sportsvape.net/wp-content/uploads/2014/09/Mint.jpg
Ground Mint: http://www.mamaslebanesekitchen.com/wp-content/uploads/2011/10/ground-dried-mint-powder.jpg

A: a steadfast position against it.

A: × I put a bag of cucumbers deep inside the fridge and forgot for a long time.
✓ I put a bag of cucumbers deep inside the fridge and forgot about them for a long time.

× A month later, I found them rotten.
✓ A month later, I found them and they were rotten.

Here's how I'd say this 😃

A: In English, we usually say the full name, as in, "mint chocolate". But it does sound natural!

A: Check the question to view the answer

A: Yes, "spread" is enough on its own.

Our word for plants like this is "invasive". They don't stay where they are planted.

Roots that spread underground are called "suckers".

A: Mint is a kind of herb whose roots will spread. So, I have to plant it in a suitable place.

(You are right! Mint plants are very invasive and will spread everywhere. It smells very good though, and I like it in tea.)