Hi there-could you state which poem you have in focus? Perhaps then we could look at synecdoche.
Incidentally, synecdoche in its most simple form is where the poet/writer uses part of a figure of speech to represent the whole thing/person/place/organisation. So, for example, 'the boards' could represent the stage and theatre.
It is for The lovesong of J. Alfred Prufrock by T.S. Eliot! please help :)