| 释义 | crackback noun[ C ]
 uk /ˈkræk.bæk/ us /ˈkræk.bæk/(alsocrackback block)
 in American football, an action in which a player who is positioned away from the ball runs back towards the play to block an opposing player:
 He is a good blocker on crackbacks or downfield to help teammates.
 He received a penalty for an illegal crackback block.
 He threw a wicked crackback block on a defensive back against Hawaii.
 The crackback block must engage a defender above the waist and not be a block in the back.
 The safeties playing outside have to be careful of crackbacks and cut blocks.
 SMART Vocabulary: related words and phrases
 American football
 attempt
 audibilize
 back judge
 blitz
 blocker
 bootleg
 dime
 flare
 formation
 forward pass
 forward progress
 free play
 free safety
 point after
 pulling blocker
 pump-fake
 punt
 return specialist
 returner
 turnover
 
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