Before I file this away can I get some help parsing ..
18d - Men flexing muscles no longer short of brawn retention? (6)
I have the answer, definition and misprint and am assuming the first three letters are "men flexing" but I just can't see how the final three relate to "muscles no longer" - Chambers has them as either an abbr. for a Book in the Bible, a rock forming mineral or a vocalists aid - no-one else has queried it so I'm obviously missing something obvious but what?
(Always assuming my posts can actually be seen on here and aren't invisible!)