1.
When someone throws up, they vomit. (INFORMAL)
She said she had thrown up after reading reports of the trial.
PHRASAL VERB: V P
2.
If something throws up dust, stones, or water, when it moves or hits the ground, it causes them to rise up into the air.
If it had hit the Earth, it would have made a crater 100 miles across and thrown up an immense cloud of dust.
PHRASAL VERB: V P n (not pron), also V n P
3.
To ~ a particular person or thing means to produce them or cause them to become noticeable. (mainly BRIT)
The political struggle threw up a strong leader...
PHRASAL VERB: V P n (not pron)