CB - What is a CB in football?

CB has 2 meanings. The most common is "Cornerback." See examples of how people use the terms.
In football, a CB is a cornerback, which is a defensive back (DB) that typically guards a wide receiver. The CB's primary job is to defend receivers, which are typically wide receivers (WR), tight ends (TE), and running backs (RBs).

How To Play Center Back In Football - 8 Ways

Why Dallas Cowboys picking CB Eric Scott isn't all that puzzling

Seahawks CB Tre Brown is back. Here's what that means for the team

New Lions CB Cam Sutton ready to lead secondary – The Oakland Press

Father of NFL CB Caleb Farley killed in home explosion

Seahawks position overview: Finally some stability at CB

Why did Bengals make deferred claim for former Chiefs CB Chris Lammons?

Cornerback - Wikipedia

Giants select Maryland CB Deonte Banks in 1st round of NFL draft

Buffalo Bills select Oregon State CB Alex Austin with final 7th round pick in 2023 NFL Draft

Freshman CB Woodard contributing early at Montana State – Skyline Sports

Central Bucks West Football

Football/Soccer: RB, CB, CB, LB - Compactness and Adaptive Movement (Tactical: Defensive principles, Academy Sessions)

Abbreviations used to refer to football positions.