paper cut

Short definition from Wiktionary

Noun

1. 1
   A wound caused by a piece of paper or any thin, sharp material which can slice through a person's skin.
2. 2
   Any minor harm.
3. 3
   A text-based description of the cuts to be made in raw footage to make finished video.
4. 4
   A decorative ornament made by artful cutting of paper, as into silhouettes.
5. 5
   a paper cut bug: a bug which causes harm and would be easy to fix.