Verse = 1 line of poetry = no, I never refer to single lines of poetry this way.

And I don't intend to start now. If you're interested in precise speech you could easy do better than using a word with multiple meanings in a sense that is probably one of the top two senses that people would not assume. If you mean a single line of poetry say "a single line of poetry".

folding up soap box and silently fading away