noun

1. the husks of wheat or other grain separated in threshing or winnowing
2. fine-cut hay or straw, used for fodder
3. anything regarded as worthless
4. tiny strips of metal foil used to confuse enemy radar
5. good-natured teasing or joking; banter
6. Bot. the bracts that enclose the individual florets on the receptacles of certain composite heads

Etymology: ME chaf < OE ceaf; akin to MDu caf, Ger kaff

transitive verb, intransitive verb