The most common and most likely answer to this crossword clue is the 8 plus 3 letter word LAUNCHED LAU
L
A
U
N
C
H
E
D
L
A
U
More clues leading to the result LAUNCHED LAU
Buddy explains!
The straight part
We know that "threw up" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case threw up = launched lau.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.