jno's example could apply, but often refers to a stop or pause that occurs within a verse or line, rather than the end. One answer could be elision, but that is a specific example and often applies to verses of prose rather than poetry. It could also be end-stop or end rhyme but this applies to a natural ending of a line that might not occur if the rythm or word order didn't require it. Catalexis, though, very specific, could work, since the query is most likely an answer for a crossword puzzle. Other possible examples depending on context are Diaerisis andMetrical Pause...