Perhaps you read something in a player update that caught you off guard, or in one of our articles. Perhaps you saw letters were put together that normally don't go together. What do they mean?

We often use unique terms or abbreviations to describe a league, a player or a situation involving something in Fantasy Football. These terms have general, universal meanings that apply to every league.

•  ADP: Average Draft Position The overall selection a player will be taken on average in a draft.

•  DST: Defense/Special Teams Created to involve defense and special-teams play in Fantasy Football without significant involvement from these less-popular areas of the game. The two facets of football act as one "player" in the strong majority of Fantasy lineups. Some leagues will use these separately, starting a defense (D) and a special teams unit (ST).

•  Dynasty league A more involved version of a keeper league where owners typically keep the same players year after year. Salary caps and other real-NFL terms and rules can also apply.

•  FAAB: Free Agent Acquisition Budget An alternative to waiver-wire adds and drops where owners use an auction-style process to acquire free agents on a weekly basis.

•  FLEX A spot on the active roster that can be utilized by a player regardless of position. Some leagues limit the flex spot to just running backs and wide receivers.

•  IDP: Individual Defensive Player Generally used to describe a league that uses defenders in its starting lineups. Most IDP leagues don't use a DST.

•  Keeper league A league where you get to keep a certain amount of players from year to year, sometimes in exchange for a draft choice. Rules vary by league.

•  No. 1 QB, No. 2 RB, No. 3 WR, etc. This is our way of classifying a player for a standard-scoring league. A No. 1 player is considered a Top-12 option at his position and worth starting in every league. A No. 2 player is considered a 13th-through-24th option at his position and worth using in leagues where you start two players at the same position. A No. 3 player is considered 25th-through-36th at his position and is worth using in leagues where you start three players at the same position.

•  Platoon Term used to describe two or more players being rotated for one starting spot based on the matchups and how the players have been playing. We typically see and make mention of owners using a platoon at quarterback.

•  PPR: Points Per Reception Usually references a league that rewards Fantasy points based on receptions. Generally, PPR leagues award one point per catch.

•  QB1, RB1, RB2, WR1, WR2, etc. Another way to say No. 1 QB, No. 1 RB, No. 2 RB, No. 1 WR, No. 2 WR, etc.

•  RBBC: Running-Back-By-Committee Term used to describe situations where multiple running backs work regularly in an offense.

•  Rookie-only draft Usually done in conjunction with dynasty leagues, these drafts only have rookies in their pool. You can only pick first-year players.

•  Standard-scoring league A league's scoring system in the vast majority of CBSSports.com leagues, including the ones governed by CBSSports.com. It's also a good starting point when developing your league's own scoring system.

•  Touchdown vulture A player who doesn't usually accumulate stats except touchdowns thanks to his role as a goal-line specialist.

•  TQB: Team Quarterback The cumulative totals of all quarterbacks on a given NFL team. These are used to ensure that an owner has the starter and backup quarterbacks on the same squad.

•  Waivers System that most fairly rewards players picked from free agency. Typically, the team with the worst record in a league gets the first chance each week to pick a player, followed by the team with the second-worst record and so on. In the case of a tie between records, the team with fewer points scored gets the option to pick first. It's so fair that the NFL uses it for their free-agent process when a player gets cut.

If there's a topic you'd like to see us cover, or a question you have that didn't get answered here, please drop us an email at dmfantasyfootball@cbs.com and put ATTN: Toolkit in the subject line. We can't guarantee a personal response, but we're always on the lookout for suggestions to help this and other areas of CBSSports.com improve.