The most common and most likely answer to this crossword clue is the 4 plus 3 letter word ROLL OUT
I've seen this crossword clue in The Daily Telegraph
R
O
L
L
O
U
T
More clues leading to the result ROLL OUT
Buddy explains!
The straight part
We know that "Launch" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case launch = roll out.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.
What does ROLL OUT mean?
ROLL OUT noun- An act of rolling out; deployment.
- A play in which a quarterback moves toward the sideline before attempting to pass.
- A form of analysis in which the same position is played many times (with different dice rolls) and the various outcomes are recorded.
- A game variant in which players progressively reveal their cards.