18 across
For
a
line
of
poetry,
deliberately
obscure
(8)
For a line of poetry, deliberately obscure (8)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
Look at deliberately obscure — that's your definition. The wordplay takes PER, meaning "for", and tacks on VERSE, a line of poetry, to build the whole thing.