What does “but […], though” mean? [closed]

"though" in similar contexts (after a comma/pause) is common in the spoken language.

The speaker simply adds an additional piece of information. For example, here it means the same as "however".

"though" at the end of a sentence is difficult to define or to explain. Somehow it has a restricting function. The easiest way to understand it would be to look it up in a dictionary of English and your mother-tongue. I try to find some examples that might clarify the meaning.

1 - Yes, he can drive a car. Actually he's a excellent driver. He is only 15 and has no driver's licence, though. - Remark: The sentence with though at the end has the same meaning as a sentence/clause with but/however at the beginning.

2 - Our team lost. It was a good game though. OALD

3 - Have you ever been to Australia? -- No, I'd like to, though. OALD

"though" is no slang word, that is not correct. But it is typical of spoken language.