Back – the offensive players in charge of running the football see “Half Back”, “Full Back”

Back Judge – an official who lines up 20 yards behind the defensive secondary, primarily in charge of ruling on “Pass Interference,” illegal “Downfield Blocks,” and “Incomplete Passes,” and determining whether “Field Goal” attempts are successful

Backfield – The area behind the “Offensive Line” or the offensive players (“Quarterback,” “Halfback,” and “Fullback” ) who line up in this area

Balanced Line – an offensive line with one “Guard” and “Tackle” on each side of the center

Ball Carrier – the player in control of the football at any given time

Beat – a player outmaneuvering an opponent’s attempt to block, tackle, etc. him

Bird Cage – a lineman’s facemask, which has extra crossbars

Blackout – restricting a game from being televised in its local market to encourage ticket sales. The NFL’s blackout policy is to restrict airplay within 75 miles of a stadium unless the game is sold out

Blind Side – opposite the side of the player’s (usually the quarterback’s) line of sight

Blitz – a defensive back abandons his normal coverage responsibilities to rush toward the quarterback in an attempt to either “Sack” or “Hurry” him

Block – to prevent a player from reaching a specific objective of the field, usually tackling the “Ball Carrier”

Bomb – A longer than usual pass play
 
Bootleg – the quarterback fakes giving a “Handoff” to a “Back” then runs in the opposite direction for a pass play

Bowl Game – NCAA games played after the regular season. Unlike the NFL, which has a playoff system and single determinate championship game, the college football season culminates in several bowl games, though the winner in the game between the number one and two seeded teams is considered the national championship

Bump and Run – a defensive back’s strategy for throwing a receiver off his route by hitting the receiver at the line of scrimmage and continuing to make contact for five yards 

Burn – See “Beat”

Buttonhook – a deceptive pass route in which the “Receiver” runs down field and then quickly turns back to face the “Line of Scrimmage”