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).

Texas Newcomers Report: Longhorns CB Malik Muhammad is already living up to recruiting hype - Burnt Orange Nation

Harry Maguire is still Englands BEST CB” & Tuchel Sacking a “disgrace” - The Ringer

Cornerback Rankings: The 32 best outside cornerbacks entering the 2021 NFL season, NFL News, Rankings and Statistics

GOAL - Italian football returns today 😍 RB❓ CB❓ CB❓ LB❓ Choose your ideal Serie A back four 🇮🇹👇

Father of NFL CB Caleb Farley killed in home explosion

Football Cornerback

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

Chiefs expect WR Toney, CB Sneed to be available for Week 1 matchup with Detroit

Football: TCU CB Josh Newton accepts invite to 2024 Senior Bowl - Frogs O' War

FOOTBALL: Turnovers, ground game power CB South past North Penn, to 6-0 – thereporteronline

Soccer Positions Explained - Complete Guide (2023)

Oklahoma football beats Alabama, TCU for commitment of Oklahoma's No. 1 CB

Ohio State Buckeyes Land Commitment From No. 1 CB Bryce West - Sports Illustrated Ohio State Buckeyes News, Analysis and More

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

Lions waiving recent seventh-round CB pick despite strong end to preseason