noun
free ticket; complimentary ticket
A ticket that is given free of charge, often for events, transportation, or attractions.
友達から映画のタダ券をもらった。
I got a free movie ticket from a friend.
このタダ券で美術館に入れますか？
Can I enter the museum with this free ticket?
Compound of タダ (free, no cost) and 券 (ticket). タダ is a colloquial term for 'free' derived from the adjective ただ (free).