send (so or sth) up definition
Put in prison, as in He'll be sent up for at least ten years. [Mid-1800s]
Cause to rise, as in The emissions sent up by that factory are clearly poisonous. [Late 1500s]
Satirize, make a parody of, as in This playwright has a genius for sending up suburban life. [First half of 1900s]
send up a trial balloon. See trial balloon.