1. (

• convulse ,
• thresh ,
• thresh_about ,
• thrash ,
• thrash_about ,
• slash ,
• toss ,
• jactitate

) move or stir about violently; "The feverish patient thrashed around in his bed" ;

2. (

• flail ,
• thresh ,

) move like a flail; thresh about; "Her arms were flailing" ;

3. (

• thrash ,
• thresh ,

) beat the seeds out of a grain ;

4. (

• thrash ,
• thresh ,
• lam ,
• flail

) give a thrashing to; beat hard ;