Cryptic crossword clue
Grenade tossed over line blew up 8

The most common and most likely answer to this crossword clue is the 8 letter word ENLARGED

I've seen this crossword clue in The Sunday Telegraph
E
N
L
A
R
G
E
D


Buddy explains!

The straight part
We know that "blew up" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case blew up = enlarged.
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 ENLARGED mean?

ENLARGED verb
  1. To make larger.
  2. To grow larger.
  3. To increase the capacity of; to expand; to give free scope or greater scope to; also, to dilate, as with joy, affection, etc.
  4. To speak or write at length upon or on (some subject); expand; elaborate
  5. To release; to set at large.
  6. To get more astern or parallel with the vessel's course; to draw aft; said of the wind.
  7. To extend the time allowed for compliance with (an order or rule).

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