What does back mean in fantasy football?

Answer 1

A "back" either refers to "quarterback" or "running back". Usually, it's meant to refer to "running back" though. Most of the time, people won't use the word "back" by itself to refer to a player unless there are context clues pointing to which of the two it means (ie., If a person asks "Should I stick with my current backs, or try to trade for a new one? I have Reggie Bush, Brandon Jacobs..." There, running backs are listed, so "back" would be referring to "running backs"

The only exception to this is if your league has defensive players, rather than defensive teams. "Back" could then refer to "corner back" or "linebacker" who are categorized together as "defensive backs." This is usually not the case, though.