chaff in WordNet English dictionary

1. be silly or tease one another
   "After we relaxed, we just kidded around"
   kid  chaff  jolly  josh  banter 
   

1. foil in thin strips; ejected into the air as a radar countermeasure
   chaff 
   
2. material consisting of seed coverings and small pieces of stem or leaves that have been separated from the seeds
   chaff  husk  shuck  stalk  straw  stubble