Launch means to start or begin something, typically referring to the introduction of a new product or event. It can also refer to the act of propelling or sending something, such as a rocket, into motion or into the air. Unfortunately, I do not see a connection between the clue "Some outdoor seats" and the word launch.
Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: Send up. Explanations are generated by AI and may be inaccurate.