Sense or nonsense, just as you please, so as it shows us what an acrostic is.
In an acrostic the beginnings of the lines are arranged in order.
The answer to the acrostic is “mantrap”; the missing rhyme is “mishap.”
But then in the hands of Swinburne an acrostic would cease to be artificial.
But there is no more trace of acrostic structure in x. till ver.
It is not ...