"chaff" in the noun sense
1. chaff, husk, shuck, stalk, straw, stubble
material consisting of seed coverings and small pieces of stem or leaves that have been separated from the seeds
foil in thin strips ejected into the air as a radar countermeasure
"chaff" in the verb sense
1. kid, chaff, jolly, josh, banter
be silly or tease one another
"After we relaxed, we just kidded around"
Source: WordNet® (An amazing lexical database of English)
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