Definition of choke up in US English:

choke up

phrasal verb

  • (in sports) grip (a bat, racket, etc.) further from the narrow end than is usual.

    ‘he choked up on the bat a few inches’
    • ‘There's no choking up on the bat, there's no shortening of that swing.’
    • ‘Roberts won't be choking up on the bat anymore, something he hopes will allow him to drive the ball with authority rather then slap it around the field.’
    • ‘Baker sees Bonds as a rarity because he generates so much power despite choking up on the bat and standing so close to the plate.’