Definition of though adverb from the Oxford Advanced Learner's Dictionary
though
adverb
ðəʊ ðoʊ
used especially at the end of a sentence to add a fact or an opinion that makes the previous statement less strong or less importantOur team lost. It was a good game though.‘Have you ever been to Australia?’ ‘No. I'd like to, though.’Usage note: although / even though / thoughYou can use these words to show contrast between two clauses or two sentences. Though is used more in spoken than in written English. You can use although, even though and though at the beginning of a sentence or clause that has a verb. Notice where the commas go: Although/Even though/Though everyone played well, we lost the game.◇We lost the game, although/even though/though everyone played well.You cannot use even on its own at the beginning of a sentence or clause instead of although, even though or though: Even everyone played well, we lost the game.
ðəʊ 
ðoʊ 
Usage note: although / even though / thoughYou can use these words to show contrast between two clauses or two sentences. Though is used more in spoken than in written English. You can use although, even though and though at the beginning of a sentence or clause that has a verb. Notice where the commas go: Although/Even though/Though everyone played well, we lost the game. ◇ We lost the game, although/even though/though everyone played well.You cannot use even on its own at the beginning of a sentence or clause instead of although, even though or though: Even everyone played well, we lost the game.