v.1. To reduce the size of something by cutting or shaving off its outer layers; trim something: I pared down the tiles so that they would fit snugly together. The pegs were too big for the hole, so I pared them down with a pocketknife.
2. To reduce the size or amount of something by gradually taking away parts of it: We should pare down the supplies we keep in our storage room until we have only what we absolutely need. The article was too long, and it took me a long time to pare it down.